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25123255230 = 235837441841
BaseRepresentation
bin10111011001011101…
…100111001110111110
32101211212211121012110
4113121131213032332
5402423023131410
615312542314450
71546402101033
oct273135471676
971755747173
1025123255230
11a722471557
124a51888a26
1324a4c2ccc8
1413048ad38a
159c091c720
hex5d97673be

25123255230 has 16 divisors (see below), whose sum is σ = 60295812624. Its totient is φ = 6699534720.

The previous prime is 25123255219. The next prime is 25123255237. The reversal of 25123255230 is 3255232152.

25123255230 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 837441841 = 25123255230 / (2 + 5 + 1 + 2 + 3 + 2 + 5 + 5 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25123255237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418720891 + ... + 418720950.

It is an arithmetic number, because the mean of its divisors is an integer number (3768488289).

Almost surely, 225123255230 is an apocalyptic number.

25123255230 is an abundant number, since it is smaller than the sum of its proper divisors (35172557394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25123255230 is a wasteful number, since it uses less digits than its factorization.

25123255230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837441851.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 25123255230 its reverse (3255232152), we get a palindrome (28378487382).

The spelling of 25123255230 in words is "twenty-five billion, one hundred twenty-three million, two hundred fifty-five thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 837441841 1674883682 2512325523 4187209205 5024651046 8374418410 12561627615 25123255230