522240325 has 6 divisors (see below), whose sum is σ = 647578034. Its totient is φ = 417792240.

The previous prime is 522240317. The next prime is 522240331. The reversal of 522240325 is 523042225.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 159794881 + 362445444 = 12641^2 + 19038^2 .

It is not a de Polignac number, because 522240325 - 2³ = 522240317 is a prime.

It is a super-2 number, since 2×522240325² = 545469914112211250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 20889613 = 522240325 / (5 + 2 + 2 + 2 + 4 + 0 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 522240325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10444782 + ... + 10444831.

Almost surely, 2^522240325 is an apocalyptic number.

It is an amenable number.

522240325 is a deficient number, since it is larger than the sum of its proper divisors (125337709).

522240325 is a wasteful number, since it uses less digits than its factorization.

522240325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20889623 (or 20889618 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 522240325 is about 22852.5780821333. The cubic root of 522240325 is about 805.2983346989.

The spelling of 522240325 in words is "five hundred twenty-two million, two hundred forty thousand, three hundred twenty-five".