25618432 has 48 divisors (see below), whose sum is σ = 58574880. Its totient is φ = 10973184.

The previous prime is 25618427. The next prime is 25618447. The reversal of 25618432 is 23481652.

It is a junction number, because it is equal to n+sod(n) for n = 25618394 and 25618403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13443 + ... + 15229.

It is an arithmetic number, because the mean of its divisors is an integer number (1220310).

Almost surely, 2^25618432 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 25618432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29287440).

25618432 is an abundant number, since it is smaller than the sum of its proper divisors (32956448).

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

25618432 is an equidigital number, since it uses as much as digits as its factorization.

25618432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1796 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 25618432 is about 5061.4654004547. The cubic root of 25618432 is about 294.7932363268.

The spelling of 25618432 in words is "twenty-five million, six hundred eighteen thousand, four hundred thirty-two".