25239312 has 150 divisors (see below), whose sum is σ = 83531422. Its totient is φ = 7112448.

The previous prime is 25239311. The next prime is 25239337. The reversal of 25239312 is 21393252.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 3111696 = 4704^2 + 1764^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (25239311) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 345708 + ... + 345780.

Almost surely, 2^25239312 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 25239312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41765711).

25239312 is an abundant number, since it is smaller than the sum of its proper divisors (58292110).

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

25239312 is an equidigital number, since it uses as much as digits as its factorization.

25239312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 85 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 25239312 is about 5023.8742022467. The cubic root of 25239312 is about 293.3318158783.

It can be divided in two parts, 252393 and 12, that added together give a triangular number (252405 = T₇₁₀).

The spelling of 25239312 in words is "twenty-five million, two hundred thirty-nine thousand, three hundred twelve".