25630344072 has 48 divisors (see below), whose sum is σ = 71809159500. Its totient is φ = 8248845696.

The previous prime is 25630344023. The next prime is 25630344073. The reversal of 25630344072 is 27044303652.

It can be written as a sum of positive squares in 2 ways, for example, as 24390318276 + 1240025796 = 156174^2 + 35214^2 .

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

It is not an unprimeable number, because it can be changed into a prime (25630344073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6135447 + ... + 6139622.

Almost surely, 2^25630344072 is an apocalyptic number.

It is an amenable number.

25630344072 is an abundant number, since it is smaller than the sum of its proper divisors (46178815428).

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

25630344072 is a wasteful number, since it uses less digits than its factorization.

25630344072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12275110 (or 12275103 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The spelling of 25630344072 in words is "twenty-five billion, six hundred thirty million, three hundred forty-four thousand, seventy-two".