25239632 has 30 divisors (see below), whose sum is σ = 53755674. Its totient is φ = 11471680.

The previous prime is 25239629. The next prime is 25239649. The reversal of 25239632 is 23693252.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 2238016 = 4796^2 + 1496^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4583 + ... + 8454.

Almost surely, 2^25239632 is an apocalyptic number.

25239632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25239632 is an abundant number, since it is smaller than the sum of its proper divisors (28516042).

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

25239632 is a wasteful number, since it uses less digits than its factorization.

25239632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13067 (or 13050 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 25239632 is about 5023.9060500770. The cubic root of 25239632 is about 293.3330555553. Note that the first 3 decimals are identical.

The spelling of 25239632 in words is "twenty-five million, two hundred thirty-nine thousand, six hundred thirty-two".