25268905 has 4 divisors (see below), whose sum is σ = 30322692. Its totient is φ = 20215120.

The previous prime is 25268869. The next prime is 25268909. The reversal of 25268905 is 50986252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2715904 + 22553001 = 1648^2 + 4749^2 .

It is not a de Polignac number, because 25268905 - 2¹⁵ = 25236137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25268909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526886 + ... + 2526895.

It is an arithmetic number, because the mean of its divisors is an integer number (7580673).

Almost surely, 2^25268905 is an apocalyptic number.

It is an amenable number.

25268905 is a deficient number, since it is larger than the sum of its proper divisors (5053787).

25268905 is an equidigital number, since it uses as much as digits as its factorization.

25268905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053786.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 25268905 is about 5026.8185763960. The cubic root of 25268905 is about 293.4464145909.

The spelling of 25268905 in words is "twenty-five million, two hundred sixty-eight thousand, nine hundred five".