3123445925 has 18 divisors (see below), whose sum is σ = 3892252182. Its totient is φ = 2486415040.

The previous prime is 3123445879. The next prime is 3123445939. The reversal of 3123445925 is 5295443213.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 828461089 + 2294984836 = 28783^2 + 47906^2 .

It is not a de Polignac number, because 3123445925 - 2²⁰ = 3122397349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4782899 + ... + 4783551.

Almost surely, 2^3123445925 is an apocalyptic number.

It is an amenable number.

3123445925 is a deficient number, since it is larger than the sum of its proper divisors (768806257).

3123445925 is an frugal number, since it uses more digits than its factorization.

3123445925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609 (or 951 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 3123445925 is about 55887.7976395563. The cubic root of 3123445925 is about 1461.7664746345.

The spelling of 3123445925 in words is "three billion, one hundred twenty-three million, four hundred forty-five thousand, nine hundred twenty-five".