3125390817 has 4 divisors (see below), whose sum is σ = 4167187760. Its totient is φ = 2083593876.

The previous prime is 3125390783. The next prime is 3125390833. The reversal of 3125390817 is 7180935213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7180935213 = 3 ⋅2393645071.

It is not a de Polignac number, because 3125390817 - 2⁷ = 3125390689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3125390017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520898467 + ... + 520898472.

It is an arithmetic number, because the mean of its divisors is an integer number (1041796940).

Almost surely, 2^3125390817 is an apocalyptic number.

It is an amenable number.

3125390817 is a deficient number, since it is larger than the sum of its proper divisors (1041796943).

3125390817 is a wasteful number, since it uses less digits than its factorization.

3125390817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041796942.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 3125390817 is about 55905.1949017263. The cubic root of 3125390817 is about 1462.0698135441.

The spelling of 3125390817 in words is "three billion, one hundred twenty-five million, three hundred ninety thousand, eight hundred seventeen".