25457388930 has 48 divisors (see below), whose sum is σ = 66230928504. Its totient is φ = 6784358400.

The previous prime is 25457388923. The next prime is 25457388959. The reversal of 25457388930 is 3988375452.

25457388930 is a `hidden beast` number, since 2 + 545 + 7 + 3 + 8 + 8 + 93 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25455883401 + 1505529 = 159549^2 + 1227^2 .

It is a super-2 number, since 2×25457388930² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55752 + ... + 232428.

Almost surely, 2^25457388930 is an apocalyptic number.

25457388930 is an abundant number, since it is smaller than the sum of its proper divisors (40773539574).

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

25457388930 is a wasteful number, since it uses less digits than its factorization.

25457388930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178291 (or 178288 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 25457388930 in words is "twenty-five billion, four hundred fifty-seven million, three hundred eighty-eight thousand, nine hundred thirty".