997525723 has 2 divisors, whose sum is σ = 997525724. Its totient is φ = 997525722.

The previous prime is 997525721. The next prime is 997525733. The reversal of 997525723 is 327525799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997525723 - 2¹ = 997525721 is a prime.

Together with 997525721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (997525721) 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, 498762861 + 498762862.

It is an arithmetic number, because the mean of its divisors is an integer number (498762862).

Almost surely, 2^997525723 is an apocalyptic number.

997525723 is a deficient number, since it is larger than the sum of its proper divisors (1).

997525723 is an equidigital number, since it uses as much as digits as its factorization.

997525723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 49.

The square root of 997525723 is about 31583.6306177741. The cubic root of 997525723 is about 999.1745598360.

The spelling of 997525723 in words is "nine hundred ninety-seven million, five hundred twenty-five thousand, seven hundred twenty-three".