25415625768 has 64 divisors (see below), whose sum is σ = 68733719040. Its totient is φ = 7785103104.

The previous prime is 25415625757. The next prime is 25415625769. The reversal of 25415625768 is 86752651452.

It is a self number, because there is not a number n which added to its sum of digits gives 25415625768.

It is not an unprimeable number, because it can be changed into a prime (25415625769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113071 + ... + 252222.

It is an arithmetic number, because the mean of its divisors is an integer number (1073964360).

Almost surely, 2^25415625768 is an apocalyptic number.

It is an amenable number.

25415625768 is an abundant number, since it is smaller than the sum of its proper divisors (43318093272).

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

25415625768 is a wasteful number, since it uses less digits than its factorization.

25415625768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365538 (or 365534 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 51.

The spelling of 25415625768 in words is "twenty-five billion, four hundred fifteen million, six hundred twenty-five thousand, seven hundred sixty-eight".