3125799999 has 48 divisors (see below), whose sum is σ = 5259421440. Its totient is φ = 1751915520.

The previous prime is 3125799961. The next prime is 3125800021. The reversal of 3125799999 is 9999975213.

It is not a de Polignac number, because 3125799999 - 2⁷ = 3125799871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

3125799999 is a modest number, since divided by 99999 gives 31257 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125799949) 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, 2567839 + ... + 2569055.

It is an arithmetic number, because the mean of its divisors is an integer number (109571280).

Almost surely, 2^3125799999 is an apocalyptic number.

3125799999 is a deficient number, since it is larger than the sum of its proper divisors (2133621441).

3125799999 is a wasteful number, since it uses less digits than its factorization.

3125799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 1977 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 63.

The square root of 3125799999 is about 55908.8543881915. The cubic root of 3125799999 is about 1462.1336163962.

The spelling of 3125799999 in words is "three billion, one hundred twenty-five million, seven hundred ninety-nine thousand, nine hundred ninety-nine".