1125260921 has 16 divisors (see below), whose sum is σ = 1209158400. Its totient is φ = 1043970768.

The previous prime is 1125260837. The next prime is 1125260951. The reversal of 1125260921 is 1290625211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125260921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125260951) 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, 315470 + ... + 319016.

It is an arithmetic number, because the mean of its divisors is an integer number (75572400).

Almost surely, 2^1125260921 is an apocalyptic number.

It is an amenable number.

1125260921 is a deficient number, since it is larger than the sum of its proper divisors (83897479).

1125260921 is a wasteful number, since it uses less digits than its factorization.

1125260921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1125260921 is about 33544.9090176140. The cubic root of 1125260921 is about 1040.1223108737.

The spelling of 1125260921 in words is "one billion, one hundred twenty-five million, two hundred sixty thousand, nine hundred twenty-one".