25392891 has 16 divisors (see below), whose sum is σ = 34496000. Its totient is φ = 16612128.

The previous prime is 25392881. The next prime is 25392907. The reversal of 25392891 is 19829352.

It is not a de Polignac number, because 25392891 - 2⁵ = 25392859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25392811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72585 + ... + 72933.

It is an arithmetic number, because the mean of its divisors is an integer number (2156000).

Almost surely, 2^25392891 is an apocalyptic number.

25392891 is a deficient number, since it is larger than the sum of its proper divisors (9103109).

25392891 is a wasteful number, since it uses less digits than its factorization.

25392891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its digits is 38880, while the sum is 39.

The square root of 25392891 is about 5039.1359378370. The cubic root of 25392891 is about 293.9255792938.

The spelling of 25392891 in words is "twenty-five million, three hundred ninety-two thousand, eight hundred ninety-one".