390269525 has 12 divisors (see below), whose sum is σ = 497014692. Its totient is φ = 303776640.

The previous prime is 390269491. The next prime is 390269533. The reversal of 390269525 is 525962093.

It can be written as a sum of positive squares in 6 ways, for example, as 42484324 + 347785201 = 6518^2 + 18649^2 .

It is a de Polignac number, because none of the positive numbers 2^k-390269525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210032 + ... + 211881.

It is an arithmetic number, because the mean of its divisors is an integer number (41417891).

Almost surely, 2^390269525 is an apocalyptic number.

It is an amenable number.

390269525 is a deficient number, since it is larger than the sum of its proper divisors (106745167).

390269525 is a wasteful number, since it uses less digits than its factorization.

390269525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421960 (or 421955 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 390269525 is about 19755.2404439936. The cubic root of 390269525 is about 730.7826253458.

The spelling of 390269525 in words is "three hundred ninety million, two hundred sixty-nine thousand, five hundred twenty-five".