1125726631 has 2 divisors, whose sum is σ = 1125726632. Its totient is φ = 1125726630.

The previous prime is 1125726629. The next prime is 1125726647. The reversal of 1125726631 is 1366275211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125726631 - 2¹ = 1125726629 is a prime.

It is a super-2 number, since 2×1125726631² = 2534520895485220322, which contains 22 as substring.

Together with 1125726629, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125726601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562863315 + 562863316.

It is an arithmetic number, because the mean of its divisors is an integer number (562863316).

Almost surely, 2^1125726631 is an apocalyptic number.

1125726631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125726631 is an equidigital number, since it uses as much as digits as its factorization.

1125726631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 1125726631 is about 33551.8498893876. The cubic root of 1125726631 is about 1040.2657823544.

The spelling of 1125726631 in words is "one billion, one hundred twenty-five million, seven hundred twenty-six thousand, six hundred thirty-one".