20105522325 has 72 divisors (see below), whose sum is σ = 42680059968. Its totient is φ = 9191076480.

The previous prime is 20105522293. The next prime is 20105522383. The reversal of 20105522325 is 52322550102.

20105522325 is a `hidden beast` number, since 2 + 0 + 105 + 522 + 32 + 5 = 666.

It is not a de Polignac number, because 20105522325 - 2⁵ = 20105522293 is a prime.

It is a super-2 number, since 2×20105522325² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 193872 + ... + 278921.

Almost surely, 2^20105522325 is an apocalyptic number.

20105522325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20105522325 is an abundant number, since it is smaller than the sum of its proper divisors (22574537643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20105522325 is an equidigital number, since it uses as much as digits as its factorization.

20105522325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472825 (or 472808 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 20105522325 in words is "twenty billion, one hundred five million, five hundred twenty-two thousand, three hundred twenty-five".