25430834225 has 12 divisors (see below), whose sum is σ = 33389189964. Its totient is φ = 19147921920.

The previous prime is 25430834171. The next prime is 25430834237. The reversal of 25430834225 is 52243803452.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2513718769 + 22917115456 = 50137^2 + 151384^2 .

It is not a de Polignac number, because 25430834225 - 2²⁸ = 25162398769 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, 29918204 + ... + 29919053.

It is an arithmetic number, because the mean of its divisors is an integer number (2782432497).

Almost surely, 2^25430834225 is an apocalyptic number.

25430834225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25430834225 is a deficient number, since it is larger than the sum of its proper divisors (7958355739).

25430834225 is a wasteful number, since it uses less digits than its factorization.

25430834225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59837284 (or 59837279 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 25430834225 in words is "twenty-five billion, four hundred thirty million, eight hundred thirty-four thousand, two hundred twenty-five".