125566889 has 8 divisors (see below), whose sum is σ = 144308160. Its totient is φ = 107026416.

The previous prime is 125566871. The next prime is 125566907. The reversal of 125566889 is 988665521.

It is an interprime number because it is at equal distance from previous prime (125566871) and next prime (125566907).

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

It is not a de Polignac number, because 125566889 - 2²⁴ = 108789673 is a prime.

It is a super-2 number, since 2×125566889² = 31534087226276642, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (125566489) 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, 48854 + ... + 51359.

It is an arithmetic number, because the mean of its divisors is an integer number (18038520).

Almost surely, 2^125566889 is an apocalyptic number.

It is an amenable number.

125566889 is a deficient number, since it is larger than the sum of its proper divisors (18741271).

125566889 is a wasteful number, since it uses less digits than its factorization.

125566889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100399.

The product of its digits is 1036800, while the sum is 50.

The square root of 125566889 is about 11205.6632556935. The cubic root of 125566889 is about 500.7547122457.

The spelling of 125566889 in words is "one hundred twenty-five million, five hundred sixty-six thousand, eight hundred eighty-nine".