25120532115 has 24 divisors (see below), whose sum is σ = 49762578528. Its totient is φ = 11483671680.

The previous prime is 25120532113. The next prime is 25120532119. The reversal of 25120532115 is 51123502152.

25120532115 is a `hidden beast` number, since 2 + 5 + 12 + 0 + 532 + 115 = 666.

It is not a de Polignac number, because 25120532115 - 2¹ = 25120532113 is a prime.

It is a super-2 number, since 2×25120532115² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25120532113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39873546 + ... + 39874175.

It is an arithmetic number, because the mean of its divisors is an integer number (2073440772).

Almost surely, 2^25120532115 is an apocalyptic number.

25120532115 is a deficient number, since it is larger than the sum of its proper divisors (24642046413).

25120532115 is a wasteful number, since it uses less digits than its factorization.

25120532115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79747739 (or 79747736 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 25120532115 in words is "twenty-five billion, one hundred twenty million, five hundred thirty-two thousand, one hundred fifteen".