5431991825 has 12 divisors (see below), whose sum is σ = 7253798748. Its totient is φ = 4011316800.

The previous prime is 5431991809. The next prime is 5431991843. The reversal of 5431991825 is 5281991345.

It can be written as a sum of positive squares in 6 ways, for example, as 2090226961 + 3341764864 = 45719^2 + 57808^2 .

It is not a de Polignac number, because 5431991825 - 2⁴ = 5431991809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5431991825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8356586 + ... + 8357235.

It is an arithmetic number, because the mean of its divisors is an integer number (604483229).

Almost surely, 2^5431991825 is an apocalyptic number.

It is an amenable number.

5431991825 is a deficient number, since it is larger than the sum of its proper divisors (1821806923).

5431991825 is a wasteful number, since it uses less digits than its factorization.

5431991825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16713844 (or 16713839 counting only the distinct ones).

The product of its digits is 388800, while the sum is 47.

The square root of 5431991825 is about 73702.0476309851. The cubic root of 5431991825 is about 1757.8684405954.

The spelling of 5431991825 in words is "five billion, four hundred thirty-one million, nine hundred ninety-one thousand, eight hundred twenty-five".