525390565 has 64 divisors (see below), whose sum is σ = 789719040. Its totient is φ = 327525120.

The previous prime is 525390521. The next prime is 525390571. The reversal of 525390565 is 565093525.

It is a happy number.

It is not a de Polignac number, because 525390565 - 2¹³ = 525382373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3223174 + ... + 3223336.

It is an arithmetic number, because the mean of its divisors is an integer number (12339360).

Almost surely, 2^525390565 is an apocalyptic number.

It is an amenable number.

525390565 is a deficient number, since it is larger than the sum of its proper divisors (264328475).

525390565 is a wasteful number, since it uses less digits than its factorization.

525390565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362.

The product of its (nonzero) digits is 202500, while the sum is 40.

The square root of 525390565 is about 22921.3997172948. The cubic root of 525390565 is about 806.9143206506.

The spelling of 525390565 in words is "five hundred twenty-five million, three hundred ninety thousand, five hundred sixty-five".