25618472 has 32 divisors (see below), whose sum is σ = 53006400. Its totient is φ = 11510400.

The previous prime is 25618447. The next prime is 25618477. The reversal of 25618472 is 27481652.

It is a super-2 number, since 2×25618472² = 1312612215229568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25618477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6197 + ... + 9467.

It is an arithmetic number, because the mean of its divisors is an integer number (1656450).

Almost surely, 2^25618472 is an apocalyptic number.

25618472 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 25618472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26503200).

25618472 is an abundant number, since it is smaller than the sum of its proper divisors (27387928).

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

25618472 is a wasteful number, since it uses less digits than its factorization.

25618472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377 (or 3373 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 25618472 is about 5061.4693518780. The cubic root of 25618472 is about 294.7933897544.

The spelling of 25618472 in words is "twenty-five million, six hundred eighteen thousand, four hundred seventy-two".