25250390265 has 16 divisors (see below), whose sum is σ = 42157173888. Its totient is φ = 12881358336.

The previous prime is 25250390213. The next prime is 25250390267. The reversal of 25250390265 is 56209305252.

It is not a de Polignac number, because 25250390265 - 2¹⁴ = 25250373881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25250390267) 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, 36594424 + ... + 36595113.

It is an arithmetic number, because the mean of its divisors is an integer number (2634823368).

Almost surely, 2^25250390265 is an apocalyptic number.

It is an amenable number.

25250390265 is a deficient number, since it is larger than the sum of its proper divisors (16906783623).

25250390265 is a wasteful number, since it uses less digits than its factorization.

25250390265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73189568.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 25250390265 in words is "twenty-five billion, two hundred fifty million, three hundred ninety thousand, two hundred sixty-five".