393445725 has 12 divisors (see below), whose sum is σ = 650497056. Its totient is φ = 209837680.

The previous prime is 393445721. The next prime is 393445729. The reversal of 393445725 is 527544393.

It is an interprime number because it is at equal distance from previous prime (393445721) and next prime (393445729).

It is not a de Polignac number, because 393445725 - 2² = 393445721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393445721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2622897 + ... + 2623046.

It is an arithmetic number, because the mean of its divisors is an integer number (54208088).

Almost surely, 2^393445725 is an apocalyptic number.

It is an amenable number.

393445725 is a deficient number, since it is larger than the sum of its proper divisors (257051331).

393445725 is a wasteful number, since it uses less digits than its factorization.

393445725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245956 (or 5245951 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 393445725 is about 19835.4663418837. The cubic root of 393445725 is about 732.7597575330.

The spelling of 393445725 in words is "three hundred ninety-three million, four hundred forty-five thousand, seven hundred twenty-five".