125621889 has 8 divisors (see below), whose sum is σ = 172899072. Its totient is φ = 81046320.

The previous prime is 125621869. The next prime is 125621941. The reversal of 125621889 is 988126521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125621889 - 2²⁵ = 92067457 is a prime.

It is a super-3 number, since 3×125621889³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125621889.

It is not an unprimeable number, because it can be changed into a prime (125621869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675294 + ... + 675479.

It is an arithmetic number, because the mean of its divisors is an integer number (21612384).

Almost surely, 2^125621889 is an apocalyptic number.

It is an amenable number.

125621889 is a deficient number, since it is larger than the sum of its proper divisors (47277183).

125621889 is a wasteful number, since it uses less digits than its factorization.

125621889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350807.

The product of its digits is 69120, while the sum is 42.

The square root of 125621889 is about 11208.1171032426. The cubic root of 125621889 is about 500.8278140248.

The spelling of 125621889 in words is "one hundred twenty-five million, six hundred twenty-one thousand, eight hundred eighty-nine".