125455569 has 8 divisors (see below), whose sum is σ = 167347680. Its totient is φ = 83600256.

The previous prime is 125455523. The next prime is 125455591. The reversal of 125455569 is 965554521.

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

It is not a de Polignac number, because 125455569 - 2⁷ = 125455441 is a prime.

It is a super-2 number, since 2×125455569² = 31478199586227522, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 125455569.

It is not an unprimeable number, because it can be changed into a prime (125455469) 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, 102 + ... + 15840.

It is an arithmetic number, because the mean of its divisors is an integer number (20918460).

Almost surely, 2^125455569 is an apocalyptic number.

It is an amenable number.

125455569 is a deficient number, since it is larger than the sum of its proper divisors (41892111).

125455569 is a wasteful number, since it uses less digits than its factorization.

125455569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18399.

The product of its digits is 270000, while the sum is 42.

The square root of 125455569 is about 11200.6950230778. The cubic root of 125455569 is about 500.6066888928.

The spelling of 125455569 in words is "one hundred twenty-five million, four hundred fifty-five thousand, five hundred sixty-nine".