1125726651 has 24 divisors (see below), whose sum is σ = 1939142400. Its totient is φ = 615303216.

The previous prime is 1125726647. The next prime is 1125726677. The reversal of 1125726651 is 1566275211.

1125726651 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1125726651 - 2² = 1125726647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1125726601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387001 + ... + 389898.

It is an arithmetic number, because the mean of its divisors is an integer number (80797600).

Almost surely, 2^1125726651 is an apocalyptic number.

1125726651 is a deficient number, since it is larger than the sum of its proper divisors (813415749).

1125726651 is a wasteful number, since it uses less digits than its factorization.

1125726651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776935 (or 776932 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 1125726651 is about 33551.8501874338. The cubic root of 1125726651 is about 1040.2657885150.

The spelling of 1125726651 in words is "one billion, one hundred twenty-five million, seven hundred twenty-six thousand, six hundred fifty-one".