25990994 has 16 divisors (see below), whose sum is σ = 41417568. Its totient is φ = 12190272.

The previous prime is 25990981. The next prime is 25990997. The reversal of 25990994 is 49909952.

It is not an unprimeable number, because it can be changed into a prime (25990997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10697 + ... + 12899.

It is an arithmetic number, because the mean of its divisors is an integer number (2588598).

Almost surely, 2^25990994 is an apocalyptic number.

25990994 is a deficient number, since it is larger than the sum of its proper divisors (15426574).

25990994 is a wasteful number, since it uses less digits than its factorization.

25990994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 25990994 is about 5098.1363261490. The cubic root of 25990994 is about 296.2153974552.

The spelling of 25990994 in words is "twenty-five million, nine hundred ninety thousand, nine hundred ninety-four".