25387264 has 72 divisors (see below), whose sum is σ = 59913728. Its totient is φ = 10506240.

The previous prime is 25387261. The next prime is 25387277. The reversal of 25387264 is 46278352.

It is not an unprimeable number, because it can be changed into a prime (25387261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55324 + ... + 55780.

Almost surely, 2^25387264 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 25387264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29956864).

25387264 is an abundant number, since it is smaller than the sum of its proper divisors (34526464).

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

25387264 is an equidigital number, since it uses as much as digits as its factorization.

25387264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 497 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 25387264 is about 5038.5775770549. The cubic root of 25387264 is about 293.9038666365.

It can be divided in two parts, 25387 and 264, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 25387264 in words is "twenty-five million, three hundred eighty-seven thousand, two hundred sixty-four".