25022494225 has 27 divisors (see below), whose sum is σ = 32978146611. Its totient is φ = 18830342400.

The previous prime is 25022494187. The next prime is 25022494279. The reversal of 25022494225 is 52249422052.

The square root of 25022494225 is 158185.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 24163769809 + 858724416 = 155447^2 + 29304^2 .

It is not a de Polignac number, because 25022494225 - 2⁷ = 25022494097 is a prime.

It is a super-2 number, since 2×25022494225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13444795 + ... + 13446655.

Almost surely, 2^25022494225 is an apocalyptic number.

25022494225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25022494225 is the 158185-th square number.

25022494225 is the 79093-rd centered octagonal number.

It is an amenable number.

25022494225 is a deficient number, since it is larger than the sum of its proper divisors (7955652386).

25022494225 is an frugal number, since it uses more digits than its factorization.

25022494225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 25022494225 in words is "twenty-five billion, twenty-two million, four hundred ninety-four thousand, two hundred twenty-five".