1125215015 has 16 divisors (see below), whose sum is σ = 1391223168. Its totient is φ = 873202176.

The previous prime is 1125215011. The next prime is 1125215059. The reversal of 1125215015 is 5105125211.

It is a cyclic number.

It is not a de Polignac number, because 1125215015 - 2² = 1125215011 is a prime.

It is a super-2 number, since 2×1125215015² = 2532217659962900450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125215011) 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, 5369 + ... + 47741.

It is an arithmetic number, because the mean of its divisors is an integer number (86951448).

Almost surely, 2^1125215015 is an apocalyptic number.

1125215015 is a deficient number, since it is larger than the sum of its proper divisors (266008153).

1125215015 is a wasteful number, since it uses less digits than its factorization.

1125215015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42538.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1125215015 is about 33544.2247637354. The cubic root of 1125215015 is about 1040.1081664493.

The spelling of 1125215015 in words is "one billion, one hundred twenty-five million, two hundred fifteen thousand, fifteen".