25135965 has 24 divisors (see below), whose sum is σ = 44288088. Its totient is φ = 13184640.

The previous prime is 25135961. The next prime is 25135973. The reversal of 25135965 is 56953152.

It can be written as a sum of positive squares in 4 ways, for example, as 870489 + 24265476 = 933^2 + 4926^2 .

It is not a de Polignac number, because 25135965 - 2² = 25135961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25135961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1834 + ... + 7323.

It is an arithmetic number, because the mean of its divisors is an integer number (1845337).

Almost surely, 2^25135965 is an apocalyptic number.

It is an amenable number.

25135965 is a deficient number, since it is larger than the sum of its proper divisors (19152123).

25135965 is a wasteful number, since it uses less digits than its factorization.

25135965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9229 (or 9226 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 25135965 is about 5013.5780636188. The cubic root of 25135965 is about 292.9309011692.

The spelling of 25135965 in words is "twenty-five million, one hundred thirty-five thousand, nine hundred sixty-five".