4431213625 has 64 divisors (see below), whose sum is σ = 6100862976. Its totient is φ = 3198720000.

The previous prime is 4431213617. The next prime is 4431213637. The reversal of 4431213625 is 5263121344.

4431213625 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 4431213625 - 2³ = 4431213617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9024630 + ... + 9025120.

It is an arithmetic number, because the mean of its divisors is an integer number (95325984).

Almost surely, 2^4431213625 is an apocalyptic number.

It is an amenable number.

4431213625 is a deficient number, since it is larger than the sum of its proper divisors (1669649351).

4431213625 is a wasteful number, since it uses less digits than its factorization.

4431213625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 681 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 4431213625 is about 66567.3615595511. The cubic root of 4431213625 is about 1642.5082609143.

Adding to 4431213625 its reverse (5263121344), we get a palindrome (9694334969).

The spelling of 4431213625 in words is "four billion, four hundred thirty-one million, two hundred thirteen thousand, six hundred twenty-five".