25138685 has 16 divisors (see below), whose sum is σ = 35441280. Its totient is φ = 16875840.

The previous prime is 25138667. The next prime is 25138693. The reversal of 25138685 is 58683152.

It is not a de Polignac number, because 25138685 - 2¹² = 25134589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16865 + ... + 18294.

It is an arithmetic number, because the mean of its divisors is an integer number (2215080).

Almost surely, 2^25138685 is an apocalyptic number.

It is an amenable number.

25138685 is a deficient number, since it is larger than the sum of its proper divisors (10302595).

25138685 is a wasteful number, since it uses less digits than its factorization.

25138685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35188.

The product of its digits is 57600, while the sum is 38.

The square root of 25138685 is about 5013.8493196346. The cubic root of 25138685 is about 292.9414669503.

The spelling of 25138685 in words is "twenty-five million, one hundred thirty-eight thousand, six hundred eighty-five".