3121067725 has 24 divisors (see below), whose sum is σ = 4007556000. Its totient is φ = 2408360640.

The previous prime is 3121067717. The next prime is 3121067837. The reversal of 3121067725 is 5277601213.

It is not a de Polignac number, because 3121067725 - 2³ = 3121067717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1172446 + ... + 1175104.

It is an arithmetic number, because the mean of its divisors is an integer number (166981500).

Almost surely, 2^3121067725 is an apocalyptic number.

It is an amenable number.

3121067725 is a deficient number, since it is larger than the sum of its proper divisors (886488275).

3121067725 is a wasteful number, since it uses less digits than its factorization.

3121067725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317 (or 4312 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 3121067725 is about 55866.5170294336. The cubic root of 3121067725 is about 1461.3953828134.

Adding to 3121067725 its reverse (5277601213), we get a palindrome (8398668938).

The spelling of 3121067725 in words is "three billion, one hundred twenty-one million, sixty-seven thousand, seven hundred twenty-five".