3125537915 has 4 divisors (see below), whose sum is σ = 3750645504. Its totient is φ = 2500430328.

The previous prime is 3125537911. The next prime is 3125537939. The reversal of 3125537915 is 5197355213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3125537915 - 2² = 3125537911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3125537911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312553787 + ... + 312553796.

It is an arithmetic number, because the mean of its divisors is an integer number (937661376).

Almost surely, 2^3125537915 is an apocalyptic number.

3125537915 is a deficient number, since it is larger than the sum of its proper divisors (625107589).

3125537915 is an equidigital number, since it uses as much as digits as its factorization.

3125537915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625107588.

The product of its digits is 141750, while the sum is 41.

The square root of 3125537915 is about 55906.5104884932. The cubic root of 3125537915 is about 1462.0927508538.

The spelling of 3125537915 in words is "three billion, one hundred twenty-five million, five hundred thirty-seven thousand, nine hundred fifteen".