25130550125 has 8 divisors (see below), whose sum is σ = 31362926712. Its totient is φ = 20104440000.

The previous prime is 25130550121. The next prime is 25130550131. The reversal of 25130550125 is 52105503152.

It can be written as a sum of positive squares in 4 ways, for example, as 8934121 + 25121616004 = 2989^2 + 158498^2 .

It is not a de Polignac number, because 25130550125 - 2² = 25130550121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25130550121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100522076 + ... + 100522325.

It is an arithmetic number, because the mean of its divisors is an integer number (3920365839).

Almost surely, 2^25130550125 is an apocalyptic number.

25130550125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25130550125 is a deficient number, since it is larger than the sum of its proper divisors (6232376587).

25130550125 is an equidigital number, since it uses as much as digits as its factorization.

25130550125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201044416 (or 201044406 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 25130550125 in words is "twenty-five billion, one hundred thirty million, five hundred fifty thousand, one hundred twenty-five".