125500889 has 2 divisors, whose sum is σ = 125500890. Its totient is φ = 125500888.

The previous prime is 125500861. The next prime is 125500891. The reversal of 125500889 is 988005521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111936400 + 13564489 = 10580^2 + 3683^2 .

It is a cyclic number.

It is not a de Polignac number, because 125500889 - 2²⁰ = 124452313 is a prime.

Together with 125500891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125500819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62750444 + 62750445.

It is an arithmetic number, because the mean of its divisors is an integer number (62750445).

Almost surely, 2^125500889 is an apocalyptic number.

It is an amenable number.

125500889 is a deficient number, since it is larger than the sum of its proper divisors (1).

125500889 is an equidigital number, since it uses as much as digits as its factorization.

125500889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 125500889 is about 11202.7179291456. The cubic root of 125500889 is about 500.6669619280. Note that the first 3 decimals are identical.

The spelling of 125500889 in words is "one hundred twenty-five million, five hundred thousand, eight hundred eighty-nine".