25072644 has 48 divisors (see below), whose sum is σ = 59907456. Its totient is φ = 8160000.

The previous prime is 25072639. The next prime is 25072661. The reversal of 25072644 is 44627052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165969 + ... + 166119.

It is an arithmetic number, because the mean of its divisors is an integer number (1248072).

Almost surely, 2^25072644 is an apocalyptic number.

It is an amenable number.

25072644 is an abundant number, since it is smaller than the sum of its proper divisors (34834812).

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

25072644 is a wasteful number, since it uses less digits than its factorization.

25072644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 25072644 is about 5007.2591305024. The cubic root of 25072644 is about 292.6847164030.

Adding to 25072644 its reverse (44627052), we get a palindrome (69699696).

It can be divided in two parts, 2507 and 2644, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 25072644 in words is "twenty-five million, seventy-two thousand, six hundred forty-four".