25365513 has 16 divisors (see below), whose sum is σ = 37696320. Its totient is φ = 15077376.

The previous prime is 25365503. The next prime is 25365541. The reversal of 25365513 is 31556352.

It is not a de Polignac number, because 25365513 - 2⁸ = 25365257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25365503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12120 + ... + 14057.

It is an arithmetic number, because the mean of its divisors is an integer number (2356020).

Almost surely, 2^25365513 is an apocalyptic number.

It is an amenable number.

25365513 is a deficient number, since it is larger than the sum of its proper divisors (12330807).

25365513 is a wasteful number, since it uses less digits than its factorization.

25365513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26216.

The product of its digits is 13500, while the sum is 30.

The square root of 25365513 is about 5036.4186680617. The cubic root of 25365513 is about 293.8199068268.

It can be divided in two parts, 25365 and 513, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 25365513 in words is "twenty-five million, three hundred sixty-five thousand, five hundred thirteen".