25555313 has 6 divisors (see below), whose sum is σ = 29727666. Its totient is φ = 21904512.

The previous prime is 25555291. The next prime is 25555331. The reversal of 25555313 is 31355552.

It can be written as a sum of positive squares in only one way, i.e., 24285184 + 1270129 = 4928^2 + 1127^2 .

It is not a de Polignac number, because 25555313 - 2⁶ = 25555249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260720 + ... + 260817.

It is an arithmetic number, because the mean of its divisors is an integer number (4954611).

Almost surely, 2^25555313 is an apocalyptic number.

It is an amenable number.

25555313 is a deficient number, since it is larger than the sum of its proper divisors (4172353).

25555313 is an equidigital number, since it uses as much as digits as its factorization.

25555313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521551 (or 521544 counting only the distinct ones).

The product of its digits is 11250, while the sum is 29.

The square root of 25555313 is about 5055.2263055179. The cubic root of 25555313 is about 294.5509321834.

The spelling of 25555313 in words is "twenty-five million, five hundred fifty-five thousand, three hundred thirteen".