25466635008 has 144 divisors (see below), whose sum is σ = 75441587200. Its totient is φ = 8473973760.

The previous prime is 25466634961. The next prime is 25466635027. The reversal of 25466635008 is 80053666452.

It is a tau number, because it is divible by the number of its divisors (144).

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, 4358553 + ... + 4364391.

Almost surely, 2^25466635008 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 25466635008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37720793600).

25466635008 is an abundant number, since it is smaller than the sum of its proper divisors (49974952192).

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

25466635008 is an equidigital number, since it uses as much as digits as its factorization.

25466635008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6495 (or 6475 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 25466635008 in words is "twenty-five billion, four hundred sixty-six million, six hundred thirty-five thousand, eight".