826125731 has 2 divisors, whose sum is σ = 826125732. Its totient is φ = 826125730.

The previous prime is 826125709. The next prime is 826125739. The reversal of 826125731 is 137521628.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-826125731 is a prime.

It is a super-2 number, since 2×826125731² = 1364967446840568722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 826125691 and 826125700.

It is not a weakly prime, because it can be changed into another prime (826125739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413062865 + 413062866.

It is an arithmetic number, because the mean of its divisors is an integer number (413062866).

Almost surely, 2^826125731 is an apocalyptic number.

826125731 is a deficient number, since it is larger than the sum of its proper divisors (1).

826125731 is an equidigital number, since it uses as much as digits as its factorization.

826125731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 826125731 is about 28742.4030136661. The cubic root of 826125731 is about 938.3151238666.

The spelling of 826125731 in words is "eight hundred twenty-six million, one hundred twenty-five thousand, seven hundred thirty-one".