25938513 has 6 divisors (see below), whose sum is σ = 37466754. Its totient is φ = 17292336.

The previous prime is 25938511. The next prime is 25938529. The reversal of 25938513 is 31583952.

It can be written as a sum of positive squares in only one way, i.e., 17918289 + 8020224 = 4233^2 + 2832^2 .

It is not a de Polignac number, because 25938513 - 2¹ = 25938511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25938511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1441020 + ... + 1441037.

It is an arithmetic number, because the mean of its divisors is an integer number (6244459).

Almost surely, 2^25938513 is an apocalyptic number.

It is an amenable number.

25938513 is a deficient number, since it is larger than the sum of its proper divisors (11528241).

25938513 is a wasteful number, since it uses less digits than its factorization.

25938513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882063 (or 2882060 counting only the distinct ones).

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

The square root of 25938513 is about 5092.9866483234. The cubic root of 25938513 is about 296.0158904605.

The spelling of 25938513 in words is "twenty-five million, nine hundred thirty-eight thousand, five hundred thirteen".