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25030030 = 25191031279
BaseRepresentation
bin101111101111…
…0110110001110
31202002122202011
41133132312032
522401430110
62252251434
7422515564
oct137366616
952078664
1025030030
1113146483
128470b7a
135254a8c
143477a34
1522e648a
hex17ded8e

25030030 has 32 divisors (see below), whose sum is σ = 47923200. Its totient is φ = 9385632.

The previous prime is 25030013. The next prime is 25030043. The reversal of 25030030 is 3003052.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18931 + ... + 20209.

It is an arithmetic number, because the mean of its divisors is an integer number (1497600).

Almost surely, 225030030 is an apocalyptic number.

25030030 is a deficient number, since it is larger than the sum of its proper divisors (22893170).

25030030 is a wasteful number, since it uses less digits than its factorization.

25030030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 25030030 is about 5003.0020987403. The cubic root of 25030030 is about 292.5188046449.

Adding to 25030030 its reverse (3003052), we get a palindrome (28033082).

The spelling of 25030030 in words is "twenty-five million, thirty thousand, thirty".

Divisors: 1 2 5 10 19 38 95 103 190 206 515 1030 1279 1957 2558 3914 6395 9785 12790 19570 24301 48602 121505 131737 243010 263474 658685 1317370 2503003 5006006 12515015 25030030