25604606144 has 112 divisors (see below), whose sum is σ = 55373918208. Its totient is φ = 11676607488.

The previous prime is 25604606123. The next prime is 25604606161. The reversal of 25604606144 is 44160640652.

It is a junction number, because it is equal to n+sod(n) for n = 25604606098 and 25604606107.

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, 46808879 + ... + 46809425.

It is an arithmetic number, because the mean of its divisors is an integer number (494409984).

Almost surely, 2^25604606144 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 25604606144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27686959104).

25604606144 is an abundant number, since it is smaller than the sum of its proper divisors (29769312064).

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

25604606144 is a wasteful number, since it uses less digits than its factorization.

25604606144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 25604606144 in words is "twenty-five billion, six hundred four million, six hundred six thousand, one hundred forty-four".