25942905 has 12 divisors (see below), whose sum is σ = 44967780. Its totient is φ = 13836192.

The previous prime is 25942871. The next prime is 25942913. The reversal of 25942905 is 50924952.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13155129 + 12787776 = 3627^2 + 3576^2 .

It is not a de Polignac number, because 25942905 - 2⁹ = 25942393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25942905.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288210 + ... + 288299.

It is an arithmetic number, because the mean of its divisors is an integer number (3747315).

Almost surely, 2^25942905 is an apocalyptic number.

It is an amenable number.

25942905 is a deficient number, since it is larger than the sum of its proper divisors (19024875).

25942905 is a wasteful number, since it uses less digits than its factorization.

25942905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576520 (or 576517 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 25942905 is about 5093.4178112541. The cubic root of 25942905 is about 296.0325970006.

The spelling of 25942905 in words is "twenty-five million, nine hundred forty-two thousand, nine hundred five".