125928389 has 2 divisors, whose sum is σ = 125928390. Its totient is φ = 125928388.

The previous prime is 125928373. The next prime is 125928403. The reversal of 125928389 is 983829521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71537764 + 54390625 = 8458^2 + 7375^2 .

It is a cyclic number.

It is not a de Polignac number, because 125928389 - 2⁴ = 125928373 is a prime.

It is a super-2 number, since 2×125928389² = 31715918312270642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125922389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62964194 + 62964195.

It is an arithmetic number, because the mean of its divisors is an integer number (62964195).

Almost surely, 2^125928389 is an apocalyptic number.

It is an amenable number.

125928389 is a deficient number, since it is larger than the sum of its proper divisors (1).

125928389 is an equidigital number, since it uses as much as digits as its factorization.

125928389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 125928389 is about 11221.7818995024. The cubic root of 125928389 is about 501.2348000275.

The spelling of 125928389 in words is "one hundred twenty-five million, nine hundred twenty-eight thousand, three hundred eighty-nine".