102206525 has 12 divisors (see below), whose sum is σ = 129129012. Its totient is φ = 80221440.

The previous prime is 102206519. The next prime is 102206539. The reversal of 102206525 is 525602201.

It can be written as a sum of positive squares in 6 ways, for example, as 6421156 + 95785369 = 2534^2 + 9787^2 .

It is not a de Polignac number, because 102206525 - 2⁴ = 102206509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102206525.

It is a congruent number.

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, 37244 + ... + 39893.

It is an arithmetic number, because the mean of its divisors is an integer number (10760751).

Almost surely, 2^102206525 is an apocalyptic number.

It is an amenable number.

102206525 is a deficient number, since it is larger than the sum of its proper divisors (26922487).

102206525 is an equidigital number, since it uses as much as digits as its factorization.

102206525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77200 (or 77195 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 102206525 is about 10109.7242791285. The cubic root of 102206525 is about 467.5480042597.

Adding to 102206525 its reverse (525602201), we get a palindrome (627808726).

The spelling of 102206525 in words is "one hundred two million, two hundred six thousand, five hundred twenty-five".