105091225 has 6 divisors (see below), whose sum is σ = 130313150. Its totient is φ = 84072960.

The previous prime is 105091219. The next prime is 105091253. The reversal of 105091225 is 522190501.

It can be written as a sum of positive squares in 3 ways, for example, as 12988816 + 92102409 = 3604^2 + 9597^2 .

It is not a de Polignac number, because 105091225 - 2¹⁷ = 104960153 is a prime.

It is a super-2 number, since 2×105091225² = 22088331144001250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 4203649 = 105091225 / (1 + 0 + 5 + 0 + 9 + 1 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 105091225.

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, 2101800 + ... + 2101849.

Almost surely, 2^105091225 is an apocalyptic number.

It is an amenable number.

105091225 is a deficient number, since it is larger than the sum of its proper divisors (25221925).

105091225 is an equidigital number, since it uses as much as digits as its factorization.

105091225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203659 (or 4203654 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 105091225 is about 10251.4011237489. The cubic root of 105091225 is about 471.9059843988.

The spelling of 105091225 in words is "one hundred five million, ninety-one thousand, two hundred twenty-five".