1125212056 has 8 divisors (see below), whose sum is σ = 2109772620. Its totient is φ = 562606024.

The previous prime is 1125212051. The next prime is 1125212057. The reversal of 1125212056 is 6502125211.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1125212056² = 2532204341935494272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1125212056.

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 as a sum of consecutive naturals, namely, 70325746 + ... + 70325761.

Almost surely, 2^1125212056 is an apocalyptic number.

It is an amenable number.

1125212056 is a deficient number, since it is larger than the sum of its proper divisors (984560564).

1125212056 is a wasteful number, since it uses less digits than its factorization.

1125212056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140651513 (or 140651509 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1125212056 is about 33544.1806577534. The cubic root of 1125212056 is about 1040.1072547176.

Adding to 1125212056 its reverse (6502125211), we get a palindrome (7627337267).

The spelling of 1125212056 in words is "one billion, one hundred twenty-five million, two hundred twelve thousand, fifty-six".