25187268 has 48 divisors (see below), whose sum is σ = 62584704. Its totient is φ = 7856640.

The previous prime is 25187237. The next prime is 25187273. The reversal of 25187268 is 86278152.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 63246 + ... + 63642.

It is an arithmetic number, because the mean of its divisors is an integer number (1303848).

Almost surely, 2^25187268 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 25187268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31292352).

25187268 is an abundant number, since it is smaller than the sum of its proper divisors (37397436).

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

25187268 is a wasteful number, since it uses less digits than its factorization.

25187268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 730 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 25187268 is about 5018.6918614316. The cubic root of 25187268 is about 293.1300583170.

The spelling of 25187268 in words is "twenty-five million, one hundred eighty-seven thousand, two hundred sixty-eight".