25312520000 has 70 divisors (see below), whose sum is σ = 62766922218. Its totient is φ = 10124992000.

The previous prime is 25312519997. The next prime is 25312520003. The reversal of 25312520000 is 2521352.

It is an interprime number because it is at equal distance from previous prime (25312519997) and next prime (25312520003).

It can be written as a sum of positive squares in 5 ways, for example, as 19441282624 + 5871237376 = 139432^2 + 76624^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25312520003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 276407 + ... + 356406.

Almost surely, 2^25312520000 is an apocalyptic number.

25312520000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25312520000 is an abundant number, since it is smaller than the sum of its proper divisors (37454402218).

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

25312520000 is an frugal number, since it uses more digits than its factorization.

25312520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632845 (or 632820 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The spelling of 25312520000 in words is "twenty-five billion, three hundred twelve million, five hundred twenty thousand".