25766613 has 8 divisors (see below), whose sum is σ = 38172800. Its totient is φ = 17177724.

The previous prime is 25766581. The next prime is 25766621. The reversal of 25766613 is 31666752.

It is not a de Polignac number, because 25766613 - 2⁵ = 25766581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25766623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477133 + ... + 477186.

It is an arithmetic number, because the mean of its divisors is an integer number (4771600).

Almost surely, 2^25766613 is an apocalyptic number.

It is an amenable number.

25766613 is a deficient number, since it is larger than the sum of its proper divisors (12406187).

25766613 is an equidigital number, since it uses as much as digits as its factorization.

25766613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954328 (or 954322 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 25766613 is about 5076.0824461390. The cubic root of 25766613 is about 295.3605206364.

The spelling of 25766613 in words is "twenty-five million, seven hundred sixty-six thousand, six hundred thirteen".