25425329524 has 18 divisors (see below), whose sum is σ = 51758706930. Its totient is φ = 10896569712.

The previous prime is 25425329491. The next prime is 25425329533. The reversal of 25425329524 is 42592352452.

It can be written as a sum of positive squares in only one way, i.e., 17800896400 + 7624433124 = 133420^2 + 87318^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64860339 + ... + 64860730.

Almost surely, 2^25425329524 is an apocalyptic number.

It is an amenable number.

25425329524 is an abundant number, since it is smaller than the sum of its proper divisors (26333377406).

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

25425329524 is a wasteful number, since it uses less digits than its factorization.

25425329524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129721087 (or 129721078 counting only the distinct ones).

The product of its digits is 864000, while the sum is 43.

The spelling of 25425329524 in words is "twenty-five billion, four hundred twenty-five million, three hundred twenty-nine thousand, five hundred twenty-four".