32125991 has 2 divisors, whose sum is σ = 32125992. Its totient is φ = 32125990.

The previous prime is 32125981. The next prime is 32125993. The reversal of 32125991 is 19952123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32125991 is a prime.

Together with 32125993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32125993) 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, 16062995 + 16062996.

It is an arithmetic number, because the mean of its divisors is an integer number (16062996).

Almost surely, 2^32125991 is an apocalyptic number.

32125991 is a deficient number, since it is larger than the sum of its proper divisors (1).

32125991 is an equidigital number, since it uses as much as digits as its factorization.

32125991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 32.

The square root of 32125991 is about 5667.9794459754. The cubic root of 32125991 is about 317.8963277678.

The spelling of 32125991 in words is "thirty-two million, one hundred twenty-five thousand, nine hundred ninety-one".