522640525 has 12 divisors (see below), whose sum is σ = 706990464. Its totient is φ = 380102000.

The previous prime is 522640519. The next prime is 522640529. The reversal of 522640525 is 525046225.

It is a happy number.

It is not a de Polignac number, because 522640525 - 2⁵ = 522640493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522640529) 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 11 ways as a sum of consecutive naturals, for example, 949981 + ... + 950530.

It is an arithmetic number, because the mean of its divisors is an integer number (58915872).

Almost surely, 2^522640525 is an apocalyptic number.

522640525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

522640525 is a deficient number, since it is larger than the sum of its proper divisors (184349939).

522640525 is a wasteful number, since it uses less digits than its factorization.

522640525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900532 (or 1900527 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 522640525 is about 22861.3325289669. The cubic root of 522640525 is about 805.5039859355.

The spelling of 522640525 in words is "five hundred twenty-two million, six hundred forty thousand, five hundred twenty-five".