390780525 has 24 divisors (see below), whose sum is σ = 646793920. Its totient is φ = 208189440.

The previous prime is 390780503. The next prime is 390780527. The reversal of 390780525 is 525087093.

It is not a de Polignac number, because 390780525 - 2⁵ = 390780493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390780527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84216 + ... + 88734.

Almost surely, 2^390780525 is an apocalyptic number.

It is an amenable number.

390780525 is a deficient number, since it is larger than the sum of its proper divisors (256013395).

390780525 is a wasteful number, since it uses less digits than its factorization.

390780525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685 (or 5680 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 390780525 is about 19768.1694903701. The cubic root of 390780525 is about 731.1014366906.

The spelling of 390780525 in words is "three hundred ninety million, seven hundred eighty thousand, five hundred twenty-five".