25245540125 has 32 divisors (see below), whose sum is σ = 34072496640. Its totient is φ = 18564571200.

The previous prime is 25245540119. The next prime is 25245540139. The reversal of 25245540125 is 52104554252.

It is not a de Polignac number, because 25245540125 - 2³⁴ = 8065670941 is a prime.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 355874 + ... + 420876.

It is an arithmetic number, because the mean of its divisors is an integer number (1064765520).

Almost surely, 2^25245540125 is an apocalyptic number.

25245540125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25245540125 is a deficient number, since it is larger than the sum of its proper divisors (8826956515).

25245540125 is a wasteful number, since it uses less digits than its factorization.

25245540125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65270 (or 65260 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 25245540125 in words is "twenty-five billion, two hundred forty-five million, five hundred forty thousand, one hundred twenty-five".