25215300964 has 96 divisors (see below), whose sum is σ = 52532637696. Its totient is φ = 10366392960.

The previous prime is 25215300953. The next prime is 25215300989. The reversal of 25215300964 is 46900351252.

It is a super-2 number, since 2×25215300964² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33936777 + ... + 33937519.

It is an arithmetic number, because the mean of its divisors is an integer number (547214976).

Almost surely, 2^25215300964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25215300964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26266318848).

25215300964 is an abundant number, since it is smaller than the sum of its proper divisors (27317336732).

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

25215300964 is a wasteful number, since it uses less digits than its factorization.

25215300964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 25215300964 in words is "twenty-five billion, two hundred fifteen million, three hundred thousand, nine hundred sixty-four".