25235865 has 12 divisors (see below), whose sum is σ = 43742244. Its totient is φ = 13459104.

The previous prime is 25235863. The next prime is 25235909. The reversal of 25235865 is 56853252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6365529 + 18870336 = 2523^2 + 4344^2 .

It is not a de Polignac number, because 25235865 - 2¹ = 25235863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25235863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280354 + ... + 280443.

It is an arithmetic number, because the mean of its divisors is an integer number (3645187).

Almost surely, 2^25235865 is an apocalyptic number.

It is an amenable number.

25235865 is a deficient number, since it is larger than the sum of its proper divisors (18506379).

25235865 is a wasteful number, since it uses less digits than its factorization.

25235865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560808 (or 560805 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 25235865 is about 5023.5311285987. The cubic root of 25235865 is about 293.3184615681.

The spelling of 25235865 in words is "twenty-five million, two hundred thirty-five thousand, eight hundred sixty-five".