25624016172 has 48 divisors (see below), whose sum is σ = 66506133120. Its totient is φ = 8531888976.

The previous prime is 25624016167. The next prime is 25624016213. The reversal of 25624016172 is 27161042652.

It is a happy number.

25624016172 is a `hidden beast` number, since 2 + 5 + 624 + 0 + 16 + 17 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32838 + ... + 228749.

It is an arithmetic number, because the mean of its divisors is an integer number (1385544440).

Almost surely, 2^25624016172 is an apocalyptic number.

It is an amenable number.

25624016172 is an abundant number, since it is smaller than the sum of its proper divisors (40882116948).

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

25624016172 is a wasteful number, since it uses less digits than its factorization.

25624016172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262507 (or 262499 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 25624016172 in words is "twenty-five billion, six hundred twenty-four million, sixteen thousand, one hundred seventy-two".