2155769625 has 16 divisors (see below), whose sum is σ = 3587201280. Its totient is φ = 1149743600.

The previous prime is 2155769597. The next prime is 2155769639. The reversal of 2155769625 is 5269675512.

2155769625 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2155769625 - 2⁹ = 2155769113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2873985 + ... + 2874734.

It is an arithmetic number, because the mean of its divisors is an integer number (224200080).

Almost surely, 2^2155769625 is an apocalyptic number.

2155769625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2155769625 is a deficient number, since it is larger than the sum of its proper divisors (1431431655).

2155769625 is an equidigital number, since it uses as much as digits as its factorization.

2155769625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748737 (or 5748727 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 48.

The square root of 2155769625 is about 46430.2662602747. The cubic root of 2155769625 is about 1291.8163674338.

The spelling of 2155769625 in words is "two billion, one hundred fifty-five million, seven hundred sixty-nine thousand, six hundred twenty-five".