2115256125 has 16 divisors (see below), whose sum is σ = 3519786816. Its totient is φ = 1128136400.

The previous prime is 2115256123. The next prime is 2115256151. The reversal of 2115256125 is 5216525112.

It is not a de Polignac number, because 2115256125 - 2¹ = 2115256123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2115256092 and 2115256101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115256123) 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 15 ways as a sum of consecutive naturals, for example, 2819967 + ... + 2820716.

It is an arithmetic number, because the mean of its divisors is an integer number (219986676).

Almost surely, 2^2115256125 is an apocalyptic number.

2115256125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2115256125 is a deficient number, since it is larger than the sum of its proper divisors (1404530691).

2115256125 is an equidigital number, since it uses as much as digits as its factorization.

2115256125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640701 (or 5640691 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 2115256125 is about 45991.9136914306. The cubic root of 2115256125 is about 1283.6727452548.

It can be divided in two parts, 21152 and 56125, that added together give a palindrome (77277).

The spelling of 2115256125 in words is "two billion, one hundred fifteen million, two hundred fifty-six thousand, one hundred twenty-five".