25388672 has 16 divisors (see below), whose sum is σ = 50579250. Its totient is φ = 12694272.

The previous prime is 25388663. The next prime is 25388681. The reversal of 25388672 is 27688352.

It is an interprime number because it is at equal distance from previous prime (25388663) and next prime (25388681).

It can be written as a sum of positive squares in only one way, i.e., 13719616 + 11669056 = 3704^2 + 3416^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99047 + ... + 99302.

Almost surely, 2^25388672 is an apocalyptic number.

It is an amenable number.

25388672 is a deficient number, since it is larger than the sum of its proper divisors (25190578).

25388672 is an equidigital number, since it uses as much as digits as its factorization.

25388672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198363 (or 198351 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 25388672 is about 5038.7172970906. The cubic root of 25388672 is about 293.9092999251.

The spelling of 25388672 in words is "twenty-five million, three hundred eighty-eight thousand, six hundred seventy-two".