75925991 has 2 divisors, whose sum is σ = 75925992. Its totient is φ = 75925990.

The previous prime is 75925903. The next prime is 75926027. The reversal of 75925991 is 19952957.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75925991 - 2¹⁰ = 75924967 is a prime.

It is a super-2 number, since 2×75925991² = 11529512218664162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75925901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37962995 + 37962996.

It is an arithmetic number, because the mean of its divisors is an integer number (37962996).

Almost surely, 2^75925991 is an apocalyptic number.

75925991 is a deficient number, since it is larger than the sum of its proper divisors (1).

75925991 is an equidigital number, since it uses as much as digits as its factorization.

75925991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 255150, while the sum is 47.

The square root of 75925991 is about 8713.5521459391. The cubic root of 75925991 is about 423.4448185652. Note that the first 3 decimals are identical.

The spelling of 75925991 in words is "seventy-five million, nine hundred twenty-five thousand, nine hundred ninety-one".