25705050025 has 12 divisors (see below), whose sum is σ = 31877849692. Its totient is φ = 20561725440.

The previous prime is 25705050001. The next prime is 25705050067. The reversal of 25705050025 is 52005050752.

It can be written as a sum of positive squares in 6 ways, for example, as 8004344089 + 17700705936 = 89467^2 + 133044^2 .

It is not a de Polignac number, because 25705050025 - 2²⁷ = 25570832297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189409 + ... + 295441.

Almost surely, 2^25705050025 is an apocalyptic number.

25705050025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25705050025 is a deficient number, since it is larger than the sum of its proper divisors (6172799667).

25705050025 is a wasteful number, since it uses less digits than its factorization.

25705050025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115740 (or 115735 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 31.

The spelling of 25705050025 in words is "twenty-five billion, seven hundred five million, fifty thousand, twenty-five".