3125292865 has 4 divisors (see below), whose sum is σ = 3750351444. Its totient is φ = 2500234288.

The previous prime is 3125292857. The next prime is 3125292883. The reversal of 3125292865 is 5682925213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1145754801 + 1979538064 = 33849^2 + 44492^2 .

It is a cyclic number.

It is not a de Polignac number, because 3125292865 - 2³ = 3125292857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312529282 + ... + 312529291.

It is an arithmetic number, because the mean of its divisors is an integer number (937587861).

Almost surely, 2^3125292865 is an apocalyptic number.

It is an amenable number.

3125292865 is a deficient number, since it is larger than the sum of its proper divisors (625058579).

3125292865 is an equidigital number, since it uses as much as digits as its factorization.

3125292865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625058578.

The product of its digits is 259200, while the sum is 43.

The square root of 3125292865 is about 55904.3188403186. The cubic root of 3125292865 is about 1462.0545392774.

The spelling of 3125292865 in words is "three billion, one hundred twenty-five million, two hundred ninety-two thousand, eight hundred sixty-five".