1125213515 has 8 divisors (see below), whose sum is σ = 1352943648. Its totient is φ = 898379200.

The previous prime is 1125213499. The next prime is 1125213517. The reversal of 1125213515 is 5153125211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1125213515 - 2⁴ = 1125213499 is a prime.

It is a super-2 number, since 2×1125213515² = 2532210908677310450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125213517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221186 + ... + 226215.

It is an arithmetic number, because the mean of its divisors is an integer number (169117956).

Almost surely, 2^1125213515 is an apocalyptic number.

1125213515 is a deficient number, since it is larger than the sum of its proper divisors (227730133).

1125213515 is an equidigital number, since it uses as much as digits as its factorization.

1125213515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447909.

The product of its digits is 1500, while the sum is 26.

The square root of 1125213515 is about 33544.2024051847. The cubic root of 1125213515 is about 1040.1077042672.

Adding to 1125213515 its reverse (5153125211), we get a palindrome (6278338726).

The spelling of 1125213515 in words is "one billion, one hundred twenty-five million, two hundred thirteen thousand, five hundred fifteen".