102220125525 has 48 divisors (see below), whose sum is σ = 214608188800. Its totient is φ = 46729198080.

The previous prime is 102220125523. The next prime is 102220125599. The reversal of 102220125525 is 525521022201.

It is a happy number.

102220125525 is a `hidden beast` number, since 10 + 2 + 2 + 2 + 0 + 125 + 525 = 666.

It is not a de Polignac number, because 102220125525 - 2¹ = 102220125523 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220125523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10812220 + ... + 10821669.

Almost surely, 2^102220125525 is an apocalyptic number.

102220125525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102220125525 is an abundant number, since it is smaller than the sum of its proper divisors (112388063275).

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

102220125525 is a wasteful number, since it uses less digits than its factorization.

102220125525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21633915 (or 21633904 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 102220125525 its reverse (525521022201), we get a palindrome (627741147726).

The spelling of 102220125525 in words is "one hundred two billion, two hundred twenty million, one hundred twenty-five thousand, five hundred twenty-five".