25061256125 has 8 divisors (see below), whose sum is σ = 31276447800. Its totient is φ = 20049004800.

The previous prime is 25061256107. The next prime is 25061256137. The reversal of 25061256125 is 52165216052.

It can be written as a sum of positive squares in 4 ways, for example, as 466489 + 25060789636 = 683^2 + 158306^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25061256125 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100244900 + ... + 100245149.

It is an arithmetic number, because the mean of its divisors is an integer number (3909555975).

Almost surely, 2^25061256125 is an apocalyptic number.

25061256125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25061256125 is a deficient number, since it is larger than the sum of its proper divisors (6215191675).

25061256125 is an equidigital number, since it uses as much as digits as its factorization.

25061256125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200490064 (or 200490054 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 25061256125 in words is "twenty-five billion, sixty-one million, two hundred fifty-six thousand, one hundred twenty-five".