3129844925 has 36 divisors (see below), whose sum is σ = 4163299380. Its totient is φ = 2326018560.

The previous prime is 3129844919. The next prime is 3129844937. The reversal of 3129844925 is 5294489213.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 337561 + 3129507364 = 581^2 + 55942^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3129844925 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3129844925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2927291 + ... + 2928359.

It is an arithmetic number, because the mean of its divisors is an integer number (115647205).

Almost surely, 2^3129844925 is an apocalyptic number.

It is an amenable number.

3129844925 is a deficient number, since it is larger than the sum of its proper divisors (1033454455).

3129844925 is a wasteful number, since it uses less digits than its factorization.

3129844925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1174 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 3129844925 is about 55945.0169809609. The cubic root of 3129844925 is about 1462.7640334654.

The spelling of 3129844925 in words is "three billion, one hundred twenty-nine million, eight hundred forty-four thousand, nine hundred twenty-five".