25618912 has 48 divisors (see below), whose sum is σ = 55832112. Its totient is φ = 11473920.

The previous prime is 25618889. The next prime is 25618979. The reversal of 25618912 is 21981652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25198 + ... + 26194.

It is an arithmetic number, because the mean of its divisors is an integer number (1163169).

Almost surely, 2^25618912 is an apocalyptic number.

25618912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25618912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27916056).

25618912 is an abundant number, since it is smaller than the sum of its proper divisors (30213200).

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

25618912 is a wasteful number, since it uses less digits than its factorization.

25618912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1083 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 25618912 is about 5061.5128173304. The cubic root of 25618912 is about 294.7950774474.

The spelling of 25618912 in words is "twenty-five million, six hundred eighteen thousand, nine hundred twelve".