25304640352 has 48 divisors (see below), whose sum is σ = 52784615520. Its totient is φ = 11900028928.

The previous prime is 25304640343. The next prime is 25304640359.

25304640352 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25304640359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833178 + ... + 863014.

It is an arithmetic number, because the mean of its divisors is an integer number (1099679490).

Almost surely, 2^25304640352 is an apocalyptic number.

It is an amenable number.

25304640352 is an abundant number, since it is smaller than the sum of its proper divisors (27479975168).

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

25304640352 is a wasteful number, since it uses less digits than its factorization.

25304640352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31423 (or 31415 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 25304640352 in words is "twenty-five billion, three hundred four million, six hundred forty thousand, three hundred fifty-two".