1125212055 has 32 divisors (see below), whose sum is σ = 1979036928. Its totient is φ = 541382400.

The previous prime is 1125212051. The next prime is 1125212057. The reversal of 1125212055 is 5502125211.

It is not a de Polignac number, because 1125212055 - 2² = 1125212051 is a prime.

It is a super-2 number, since 2×1125212055² = 2532204337434646050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125212051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4414 + ... + 47643.

It is an arithmetic number, because the mean of its divisors is an integer number (61844904).

Almost surely, 2^1125212055 is an apocalyptic number.

1125212055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1125212055 is a deficient number, since it is larger than the sum of its proper divisors (853824873).

1125212055 is a wasteful number, since it uses less digits than its factorization.

1125212055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52207.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1125212055 is about 33544.1806428477. The cubic root of 1125212055 is about 1040.1072544095.

Adding to 1125212055 its reverse (5502125211), we get a palindrome (6627337266).

The spelling of 1125212055 in words is "one billion, one hundred twenty-five million, two hundred twelve thousand, fifty-five".