125089997 has 2 divisors, whose sum is σ = 125089998. Its totient is φ = 125089996.

The previous prime is 125089981. The next prime is 125089999. The reversal of 125089997 is 799980521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70241161 + 54848836 = 8381^2 + 7406^2 .

It is a cyclic number.

It is not a de Polignac number, because 125089997 - 2⁴ = 125089981 is a prime.

Together with 125089999, 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 (125089999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62544998 + 62544999.

It is an arithmetic number, because the mean of its divisors is an integer number (62544999).

Almost surely, 2^125089997 is an apocalyptic number.

It is an amenable number.

125089997 is a deficient number, since it is larger than the sum of its proper divisors (1).

125089997 is an equidigital number, since it uses as much as digits as its factorization.

125089997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 125089997 is about 11184.3639515173. The cubic root of 125089997 is about 500.1199672134.

The spelling of 125089997 in words is "one hundred twenty-five million, eighty-nine thousand, nine hundred ninety-seven".