5645121625 has 32 divisors (see below), whose sum is σ = 8276800896. Its totient is φ = 3789720000.

The previous prime is 5645121623. The next prime is 5645121661. The reversal of 5645121625 is 5261215465.

5645121625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5645121625 - 2¹ = 5645121623 is a prime.

It is a super-2 number, since 2×5645121625² = 63734796322085281250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5645121623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140031 + ... + 175780.

It is an arithmetic number, because the mean of its divisors is an integer number (258650028).

Almost surely, 2^5645121625 is an apocalyptic number.

5645121625 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5645121625 is a deficient number, since it is larger than the sum of its proper divisors (2631679271).

5645121625 is a wasteful number, since it uses less digits than its factorization.

5645121625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315850 (or 315840 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 5645121625 is about 75134.0244163721. The cubic root of 5645121625 is about 1780.5647352770.

The spelling of 5645121625 in words is "five billion, six hundred forty-five million, one hundred twenty-one thousand, six hundred twenty-five".