25131480408 has 24 divisors (see below), whose sum is σ = 68064426300. Its totient is φ = 8377160112.

The previous prime is 25131480391. The next prime is 25131480457. The reversal of 25131480408 is 80408413152.

25131480408 is a `hidden beast` number, since 2 + 5 + 131 + 480 + 40 + 8 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 174524098 + ... + 174524241.

Almost surely, 2^25131480408 is an apocalyptic number.

It is an amenable number.

25131480408 is an abundant number, since it is smaller than the sum of its proper divisors (42932945892).

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

25131480408 is a wasteful number, since it uses less digits than its factorization.

25131480408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349048351 (or 349048344 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 25131480408 in words is "twenty-five billion, one hundred thirty-one million, four hundred eighty thousand, four hundred eight".