125738889 has 4 divisors (see below), whose sum is σ = 167651856. Its totient is φ = 83825924.

The previous prime is 125738813. The next prime is 125738917. The reversal of 125738889 is 988837521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125738889 - 2⁷ = 125738761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125731889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20956479 + ... + 20956484.

It is an arithmetic number, because the mean of its divisors is an integer number (41912964).

Almost surely, 2^125738889 is an apocalyptic number.

It is an amenable number.

125738889 is a deficient number, since it is larger than the sum of its proper divisors (41912967).

125738889 is an equidigital number, since it uses as much as digits as its factorization.

125738889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41912966.

The product of its digits is 967680, while the sum is 51.

The square root of 125738889 is about 11213.3353200553. The cubic root of 125738889 is about 500.9832505028.

The spelling of 125738889 in words is "one hundred twenty-five million, seven hundred thirty-eight thousand, eight hundred eighty-nine".