25387625 has 16 divisors (see below), whose sum is σ = 32078592. Its totient is φ = 20057200.

The previous prime is 25387619. The next prime is 25387631. The reversal of 25387625 is 52678352.

It is an interprime number because it is at equal distance from previous prime (25387619) and next prime (25387631).

It is not a de Polignac number, because 25387625 - 2²² = 21193321 is a prime.

It is a Duffinian number.

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, 9152 + ... + 11598.

It is an arithmetic number, because the mean of its divisors is an integer number (2004912).

Almost surely, 2^25387625 is an apocalyptic number.

25387625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25387625 is a deficient number, since it is larger than the sum of its proper divisors (6690967).

25387625 is an equidigital number, since it uses as much as digits as its factorization.

25387625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545 (or 2535 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 25387625 is about 5038.6134005300. The cubic root of 25387625 is about 293.9052597076.

It can be divided in two parts, 253 and 87625, that added together give a palindrome (87878).

The spelling of 25387625 in words is "twenty-five million, three hundred eighty-seven thousand, six hundred twenty-five".