25425403992 has 24 divisors (see below), whose sum is σ = 68860469340. Its totient is φ = 8475134640.

The previous prime is 25425403919. The next prime is 25425404029. The reversal of 25425403992 is 29930452452.

25425403992 is a `hidden beast` number, since 2 + 5 + 4 + 254 + 0 + 399 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

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, 176565234 + ... + 176565377.

Almost surely, 2^25425403992 is an apocalyptic number.

It is an amenable number.

25425403992 is an abundant number, since it is smaller than the sum of its proper divisors (43435065348).

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

25425403992 is a wasteful number, since it uses less digits than its factorization.

25425403992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353130623 (or 353130616 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 25425403992 in words is "twenty-five billion, four hundred twenty-five million, four hundred three thousand, nine hundred ninety-two".