105125225 has 6 divisors (see below), whose sum is σ = 130355310. Its totient is φ = 84100160.

The previous prime is 105125219. The next prime is 105125257. The reversal of 105125225 is 522521501.

It can be written as a sum of positive squares in 3 ways, for example, as 21603904 + 83521321 = 4648^2 + 9139^2 .

It is a de Polignac number, because none of the positive numbers 2^k-105125225 is a prime.

It is a super-2 number, since 2×105125225² = 22102625862601250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105125225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2102480 + ... + 2102529.

It is an arithmetic number, because the mean of its divisors is an integer number (21725885).

Almost surely, 2^105125225 is an apocalyptic number.

It is an amenable number.

105125225 is a deficient number, since it is larger than the sum of its proper divisors (25230085).

105125225 is an equidigital number, since it uses as much as digits as its factorization.

105125225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205019 (or 4205014 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 105125225 is about 10253.0592995457. The cubic root of 105125225 is about 471.9568705803.

Adding to 105125225 its reverse (522521501), we get a palindrome (627646726).

The spelling of 105125225 in words is "one hundred five million, one hundred twenty-five thousand, two hundred twenty-five".