25947513 has 16 divisors (see below), whose sum is σ = 38611200. Its totient is φ = 17221680.

The previous prime is 25947487. The next prime is 25947539. The reversal of 25947513 is 31574952.

It is an interprime number because it is at equal distance from previous prime (25947487) and next prime (25947539).

It is not a de Polignac number, because 25947513 - 2¹³ = 25939321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25947583) 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, 4443 + ... + 8463.

It is an arithmetic number, because the mean of its divisors is an integer number (2413200).

Almost surely, 2^25947513 is an apocalyptic number.

It is an amenable number.

25947513 is a deficient number, since it is larger than the sum of its proper divisors (12663687).

25947513 is a wasteful number, since it uses less digits than its factorization.

25947513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269 (or 4263 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 25947513 is about 5093.8701396875. The cubic root of 25947513 is about 296.0501231469.

The spelling of 25947513 in words is "twenty-five million, nine hundred forty-seven thousand, five hundred thirteen".