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25251353423 = 731971755883
BaseRepresentation
bin10111100001000110…
…010001001101001111
32102011210212122212222
4113201012101031033
5403203321302143
615333400045555
71552515651122
oct274106211517
972153778788
1025251353423
11a78880462a
124a887638bb
1324c5630c5a
1413178d63b9
159cbcc2768
hex5e119134f

25251353423 has 8 divisors (see below), whose sum is σ = 25727212368. Its totient is φ = 24779006784.

The previous prime is 25251353383. The next prime is 25251353431. The reversal of 25251353423 is 32435315252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25251353423 - 226 = 25184244559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25251353453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863561 + ... + 892322.

It is an arithmetic number, because the mean of its divisors is an integer number (3215901546).

Almost surely, 225251353423 is an apocalyptic number.

25251353423 is a deficient number, since it is larger than the sum of its proper divisors (475858945).

25251353423 is a wasteful number, since it uses less digits than its factorization.

25251353423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756153.

The product of its digits is 108000, while the sum is 35.

Adding to 25251353423 its reverse (32435315252), we get a palindrome (57686668675).

The spelling of 25251353423 in words is "twenty-five billion, two hundred fifty-one million, three hundred fifty-three thousand, four hundred twenty-three".

Divisors: 1 73 197 14381 1755883 128179459 345908951 25251353423