102520004225 has 12 divisors (see below), whose sum is σ = 130560611964. Its totient is φ = 79799353920.

The previous prime is 102520004207. The next prime is 102520004287. The reversal of 102520004225 is 522400025201.

It can be written as a sum of positive squares in 6 ways, for example, as 98883136 + 102421121089 = 9944^2 + 320033^2 .

It is not a de Polignac number, because 102520004225 - 2⁶ = 102520004161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102520004225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55415294 + ... + 55417143.

It is an arithmetic number, because the mean of its divisors is an integer number (10880050997).

Almost surely, 2^102520004225 is an apocalyptic number.

It is an amenable number.

102520004225 is a deficient number, since it is larger than the sum of its proper divisors (28040607739).

102520004225 is a wasteful number, since it uses less digits than its factorization.

102520004225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110832484 (or 110832479 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 102520004225 its reverse (522400025201), we get a palindrome (624920029426).

The spelling of 102520004225 in words is "one hundred two billion, five hundred twenty million, four thousand, two hundred twenty-five".