25251365 has 4 divisors (see below), whose sum is σ = 30301644. Its totient is φ = 20201088.

The previous prime is 25251349. The next prime is 25251379. The reversal of 25251365 is 56315252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11464996 + 13786369 = 3386^2 + 3713^2 .

It is a cyclic number.

It is not a de Polignac number, because 25251365 - 2⁴ = 25251349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525132 + ... + 2525141.

It is an arithmetic number, because the mean of its divisors is an integer number (7575411).

Almost surely, 2^25251365 is an apocalyptic number.

It is an amenable number.

25251365 is a deficient number, since it is larger than the sum of its proper divisors (5050279).

25251365 is an equidigital number, since it uses as much as digits as its factorization.

25251365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050278.

The product of its digits is 9000, while the sum is 29.

The square root of 25251365 is about 5025.0736313013. The cubic root of 25251365 is about 293.3785018541.

It can be divided in two parts, 2525 and 1365, that multiplied together give a triangular number (3446625 = T₂₆₂₅).

The spelling of 25251365 in words is "twenty-five million, two hundred fifty-one thousand, three hundred sixty-five".