388775025 has 24 divisors (see below), whose sum is σ = 714195360. Its totient is φ = 207346320.

The previous prime is 388775011. The next prime is 388775027. The reversal of 388775025 is 520577883.

It is not a de Polignac number, because 388775025 - 2⁵ = 388774993 is a prime.

It is a super-2 number, since 2×388775025² = 302292040127501250, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (388775027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287307 + ... + 288656.

It is an arithmetic number, because the mean of its divisors is an integer number (29758140).

Almost surely, 2^388775025 is an apocalyptic number.

It is an amenable number.

388775025 is a deficient number, since it is larger than the sum of its proper divisors (325420335).

388775025 is a wasteful number, since it uses less digits than its factorization.

388775025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575982 (or 575971 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The square root of 388775025 is about 19717.3787558083. The cubic root of 388775025 is about 729.8486112540.

The spelling of 388775025 in words is "three hundred eighty-eight million, seven hundred seventy-five thousand, twenty-five".