525222762561 has 18 divisors (see below), whose sum is σ = 882517159602. Its totient is φ = 300127292640.

The previous prime is 525222762541. The next prime is 525222762577. The reversal of 525222762561 is 165267222525.

525222762561 is a `hidden beast` number, since 5 + 2 + 5 + 2 + 2 + 27 + 62 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 522195562161 + 3027200400 = 722631^2 + 55020^2 .

It is not a de Polignac number, because 525222762561 - 2⁷ = 525222762433 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (525222762511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 595490220 + ... + 595491101.

It is an arithmetic number, because the mean of its divisors is an integer number (49028731089).

Almost surely, 2^525222762561 is an apocalyptic number.

It is an amenable number.

525222762561 is a deficient number, since it is larger than the sum of its proper divisors (357294397041).

525222762561 is a wasteful number, since it uses less digits than its factorization.

525222762561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190981341 (or 1190981331 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 525222762561 in words is "five hundred twenty-five billion, two hundred twenty-two million, seven hundred sixty-two thousand, five hundred sixty-one".