20522534514525 has 36 divisors (see below), whose sum is σ = 36760614740512. Its totient is φ = 10944614725920.

The previous prime is 20522534514407. The next prime is 20522534514527. The reversal of 20522534514525 is 52541543522502.

20522534514525 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 2 + 534 + 51 + 45 + 25 = 666.

It is not a de Polignac number, because 20522534514525 - 2⁷ = 20522534514397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522534514527) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 286122 + ... + 6413028.

Almost surely, 2^{20522534514525} is an apocalyptic number.

20522534514525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20522534514525 is a deficient number, since it is larger than the sum of its proper divisors (16238080225987).

20522534514525 is a wasteful number, since it uses less digits than its factorization.

20522534514525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141810 (or 6141802 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 45.

The spelling of 20522534514525 in words is "twenty trillion, five hundred twenty-two billion, five hundred thirty-four million, five hundred fourteen thousand, five hundred twenty-five".