2155248625 has 8 divisors (see below), whose sum is σ = 2689750440. Its totient is φ = 1724198800.

The previous prime is 2155248617. The next prime is 2155248629. The reversal of 2155248625 is 5268425512.

It can be written as a sum of positive squares in 4 ways, for example, as 29669809 + 2125578816 = 5447^2 + 46104^2 .

It is not a de Polignac number, because 2155248625 - 2³ = 2155248617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155248629) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8620870 + ... + 8621119.

It is an arithmetic number, because the mean of its divisors is an integer number (336218805).

Almost surely, 2^2155248625 is an apocalyptic number.

2155248625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2155248625 is a deficient number, since it is larger than the sum of its proper divisors (534501815).

2155248625 is an equidigital number, since it uses as much as digits as its factorization.

2155248625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17242004 (or 17241994 counting only the distinct ones).

The product of its digits is 192000, while the sum is 40.

The square root of 2155248625 is about 46424.6553568252. The cubic root of 2155248625 is about 1291.7122916015.

The spelling of 2155248625 in words is "two billion, one hundred fifty-five million, two hundred forty-eight thousand, six hundred twenty-five".