1015225 has 6 divisors (see below), whose sum is σ = 1258910. Its totient is φ = 812160.

The previous prime is 1015207. The next prime is 1015277. The reversal of 1015225 is 5225101.

1015225 = T₁₇₆ + T₁₇₇ + ... + T₂₂₅.

It can be written as a sum of positive squares in 3 ways, for example, as 9216 + 1006009 = 96^2 + 1003^2 .

It is not a de Polignac number, because 1015225 - 2⁷ = 1015097 is a prime.

1015225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1015199 and 1015208.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20280 + ... + 20329.

2^1015225 is an apocalyptic number.

It is an amenable number.

1015225 is a deficient number, since it is larger than the sum of its proper divisors (243685).

1015225 is an equidigital number, since it uses as much as digits as its factorization.

1015225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40619 (or 40614 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1015225 is about 1007.5837434179. The cubic root of 1015225 is about 100.5049460038.

It can be divided in two parts, 101 and 5225, that multiplied together give a palindrome (527725).

The spelling of 1015225 in words is "one million, fifteen thousand, two hundred twenty-five".