25940985 has 32 divisors (see below), whose sum is σ = 49935360. Its totient is φ = 11233728.

The previous prime is 25940983. The next prime is 25941011. The reversal of 25940985 is 58904952.

It is not a de Polignac number, because 25940985 - 2¹ = 25940983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25940983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4507 + ... + 8496.

It is an arithmetic number, because the mean of its divisors is an integer number (1560480).

Almost surely, 2^25940985 is an apocalyptic number.

It is an amenable number.

25940985 is a deficient number, since it is larger than the sum of its proper divisors (23994375).

25940985 is a wasteful number, since it uses less digits than its factorization.

25940985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13037.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 25940985 is about 5093.2293292174. The cubic root of 25940985 is about 296.0252938271.

The spelling of 25940985 in words is "twenty-five million, nine hundred forty thousand, nine hundred eighty-five".