25250025265 has 4 divisors (see below), whose sum is σ = 30300030324. Its totient is φ = 20200020208.

The previous prime is 25250025259. The next prime is 25250025277. The reversal of 25250025265 is 56252005252.

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 15584775921 + 9665249344 = 124839^2 + 98312^2 .

It is a cyclic number.

It is not a de Polignac number, because 25250025265 - 2³ = 25250025257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25250025265.

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, 2525002522 + ... + 2525002531.

It is an arithmetic number, because the mean of its divisors is an integer number (7575007581).

Almost surely, 2^25250025265 is an apocalyptic number.

It is an amenable number.

25250025265 is a deficient number, since it is larger than the sum of its proper divisors (5050005059).

25250025265 is an equidigital number, since it uses as much as digits as its factorization.

25250025265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050005058.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 25250025265 in words is "twenty-five billion, two hundred fifty million, twenty-five thousand, two hundred sixty-five".