3121253425 has 12 divisors (see below), whose sum is σ = 3871578096. Its totient is φ = 2496213200.

The previous prime is 3121253389. The next prime is 3121253449. The reversal of 3121253425 is 5243521213.

It is not a de Polignac number, because 3121253425 - 2²¹ = 3119156273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121253393 and 3121253402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68670 + ... + 104680.

It is an arithmetic number, because the mean of its divisors is an integer number (322631508).

Almost surely, 2^3121253425 is an apocalyptic number.

It is an amenable number.

3121253425 is a deficient number, since it is larger than the sum of its proper divisors (750324671).

3121253425 is a wasteful number, since it uses less digits than its factorization.

3121253425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39488 (or 39483 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 3121253425 is about 55868.1790020044. The cubic root of 3121253425 is about 1461.4243660294.

Adding to 3121253425 its reverse (5243521213), we get a palindrome (8364774638).

The spelling of 3121253425 in words is "three billion, one hundred twenty-one million, two hundred fifty-three thousand, four hundred twenty-five".