1125215 has 16 divisors (see below), whose sum is σ = 1662528. Its totient is φ = 711936.

The previous prime is 1125209. The next prime is 1125217. The reversal of 1125215 is 5125211.

It is a cyclic number.

It is not a de Polignac number, because 1125215 - 2⁶ = 1125151 is a prime.

It is a super-2 number, since 2×1125215² = 2532217592450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1125193 and 1125202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (103908).

2^1125215 is an apocalyptic number.

1125215 is a deficient number, since it is larger than the sum of its proper divisors (537313).

1125215 is a wasteful number, since it uses less digits than its factorization.

1125215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498.

The product of its digits is 100, while the sum is 17.

The square root of 1125215 is about 1060.7615189099. The cubic root of 1125215 is about 104.0108161828.

The spelling of 1125215 in words is "one million, one hundred twenty-five thousand, two hundred fifteen".