1125612257 has 16 divisors (see below), whose sum is σ = 1410432000. Its totient is φ = 872681040.

The previous prime is 1125612253. The next prime is 1125612277. The reversal of 1125612257 is 7522165211.

It is not a de Polignac number, because 1125612257 - 2² = 1125612253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125612253) 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, 21407 + ... + 52052.

It is an arithmetic number, because the mean of its divisors is an integer number (88152000).

Almost surely, 2^1125612257 is an apocalyptic number.

It is an amenable number.

1125612257 is a deficient number, since it is larger than the sum of its proper divisors (284819743).

1125612257 is a wasteful number, since it uses less digits than its factorization.

1125612257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73676.

The product of its digits is 8400, while the sum is 32.

The square root of 1125612257 is about 33550.1454095210. The cubic root of 1125612257 is about 1040.2305507730.

Adding to 1125612257 its reverse (7522165211), we get a palindrome (8647777468).

The spelling of 1125612257 in words is "one billion, one hundred twenty-five million, six hundred twelve thousand, two hundred fifty-seven".