388561725 has 24 divisors (see below), whose sum is σ = 713803520. Its totient is φ = 207232560.

The previous prime is 388561703. The next prime is 388561757. The reversal of 388561725 is 527165883.

388561725 is a `hidden beast` number, since 3 + 8 + 8 + 5 + 617 + 25 = 666.

It is not a de Polignac number, because 388561725 - 2¹⁰ = 388560701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 287149 + ... + 288498.

Almost surely, 2^388561725 is an apocalyptic number.

It is an amenable number.

388561725 is a deficient number, since it is larger than the sum of its proper divisors (325241795).

388561725 is a wasteful number, since it uses less digits than its factorization.

388561725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575666 (or 575655 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 388561725 is about 19711.9690797241. The cubic root of 388561725 is about 729.7151105763.

The spelling of 388561725 in words is "three hundred eighty-eight million, five hundred sixty-one thousand, seven hundred twenty-five".