25304157405 has 48 divisors (see below), whose sum is σ = 45524868480. Its totient is φ = 13483723968.

The previous prime is 25304157367. The next prime is 25304157407. The reversal of 25304157405 is 50475140352.

It is not a de Polignac number, because 25304157405 - 2⁶ = 25304157341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25304157405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25304157407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1477431 + ... + 1494459.

It is an arithmetic number, because the mean of its divisors is an integer number (948434760).

Almost surely, 2^25304157405 is an apocalyptic number.

It is an amenable number.

25304157405 is a deficient number, since it is larger than the sum of its proper divisors (20220711075).

25304157405 is a wasteful number, since it uses less digits than its factorization.

25304157405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18272 (or 18260 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

Adding to 25304157405 its reverse (50475140352), we get a palindrome (75779297757).

The spelling of 25304157405 in words is "twenty-five billion, three hundred four million, one hundred fifty-seven thousand, four hundred five".