388434725 has 24 divisors (see below), whose sum is σ = 551952768. Its totient is φ = 265636800.

The previous prime is 388434719. The next prime is 388434757. The reversal of 388434725 is 527434883.

It is not a de Polignac number, because 388434725 - 2⁶ = 388434661 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 23 ways as a sum of consecutive naturals, for example, 66680 + ... + 72270.

It is an arithmetic number, because the mean of its divisors is an integer number (22998032).

Almost surely, 2^388434725 is an apocalyptic number.

388434725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

388434725 is a deficient number, since it is larger than the sum of its proper divisors (163518043).

388434725 is a wasteful number, since it uses less digits than its factorization.

388434725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005 (or 6000 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The square root of 388434725 is about 19708.7474234158. The cubic root of 388434725 is about 729.6356003281.

The spelling of 388434725 in words is "three hundred eighty-eight million, four hundred thirty-four thousand, seven hundred twenty-five".