2645168625 has 48 divisors (see below), whose sum is σ = 5201868672. Its totient is φ = 1282500000.

The previous prime is 2645168621. The next prime is 2645168629. The reversal of 2645168625 is 5268615462.

2645168625 is a `hidden beast` number, since 2 + 6 + 4 + 5 + 16 + 8 + 625 = 666.

2645168625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2645168621) and next prime (2645168629).

It is not a de Polignac number, because 2645168625 - 2² = 2645168621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2645168621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94501 + ... + 119250.

It is an arithmetic number, because the mean of its divisors is an integer number (108372264).

Almost surely, 2^2645168625 is an apocalyptic number.

2645168625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2645168625 is a deficient number, since it is larger than the sum of its proper divisors (2556700047).

2645168625 is a wasteful number, since it uses less digits than its factorization.

2645168625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213783 (or 213770 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 2645168625 is about 51431.2028344662. The cubic root of 2645168625 is about 1382.9860122212.

The spelling of 2645168625 in words is "two billion, six hundred forty-five million, one hundred sixty-eight thousand, six hundred twenty-five".