125558289 has 16 divisors (see below), whose sum is σ = 195803200. Its totient is φ = 79299648.

The previous prime is 125558287. The next prime is 125558347. The reversal of 125558289 is 982855521.

It is a happy number.

125558289 is a `hidden beast` number, since 12 + 5 + 558 + 2 + 89 = 666.

It is not a de Polignac number, because 125558289 - 2¹ = 125558287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125558281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121864 + ... + 122889.

It is an arithmetic number, because the mean of its divisors is an integer number (12237700).

Almost surely, 2^125558289 is an apocalyptic number.

125558289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

125558289 is a deficient number, since it is larger than the sum of its proper divisors (70244911).

125558289 is a wasteful number, since it uses less digits than its factorization.

125558289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244781 (or 244775 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 125558289 is about 11205.2795145860. The cubic root of 125558289 is about 500.7432798559.

The spelling of 125558289 in words is "one hundred twenty-five million, five hundred fifty-eight thousand, two hundred eighty-nine".