25012775125 has 16 divisors (see below), whose sum is σ = 33617171952. Its totient is φ = 18470971200.

The previous prime is 25012775107. The next prime is 25012775147. The reversal of 25012775125 is 52157721052.

It can be written as a sum of positive squares in 8 ways, for example, as 13118037156 + 11894737969 = 114534^2 + 109063^2 .

It is not a de Polignac number, because 25012775125 - 2⁹ = 25012774613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7694614 + ... + 7697863.

It is an arithmetic number, because the mean of its divisors is an integer number (2101073247).

Almost surely, 2^25012775125 is an apocalyptic number.

25012775125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25012775125 is a deficient number, since it is larger than the sum of its proper divisors (8604396827).

25012775125 is a wasteful number, since it uses less digits than its factorization.

25012775125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15392505 (or 15392495 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 37.

The spelling of 25012775125 in words is "twenty-five billion, twelve million, seven hundred seventy-five thousand, one hundred twenty-five".