4625555891 has 16 divisors (see below), whose sum is σ = 5352117120. Its totient is φ = 3950858880.

The previous prime is 4625555873. The next prime is 4625555929. The reversal of 4625555891 is 1985555264.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4625555891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4625555861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88700 + ... + 130838.

It is an arithmetic number, because the mean of its divisors is an integer number (334507320).

Almost surely, 2^4625555891 is an apocalyptic number.

4625555891 is a deficient number, since it is larger than the sum of its proper divisors (726561229).

4625555891 is a wasteful number, since it uses less digits than its factorization.

4625555891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42754.

The product of its digits is 2160000, while the sum is 50.

The square root of 4625555891 is about 68011.4394127929. The cubic root of 4625555891 is about 1666.1776745772.

The spelling of 4625555891 in words is "four billion, six hundred twenty-five million, five hundred fifty-five thousand, eight hundred ninety-one".