125645055 has 32 divisors (see below), whose sum is σ = 205433280. Its totient is φ = 65556480.

The previous prime is 125645027. The next prime is 125645057. The reversal of 125645055 is 550546521.

It is not a de Polignac number, because 125645055 - 2⁶ = 125644991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125645057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 322801 + ... + 323189.

It is an arithmetic number, because the mean of its divisors is an integer number (6419790).

Almost surely, 2^125645055 is an apocalyptic number.

125645055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125645055 is a deficient number, since it is larger than the sum of its proper divisors (79788225).

125645055 is a wasteful number, since it uses less digits than its factorization.

125645055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 125645055 is about 11209.1505030488. The cubic root of 125645055 is about 500.8585981080.

The spelling of 125645055 in words is "one hundred twenty-five million, six hundred forty-five thousand, fifty-five".