125055555 has 16 divisors (see below), whose sum is σ = 200931840. Its totient is φ = 66415328.

The previous prime is 125055487. The next prime is 125055559. The reversal of 125055555 is 555550521.

It is a cyclic number.

It is not a de Polignac number, because 125055555 - 2¹⁵ = 125022787 is a prime.

125055555 is a modest number, since divided by 55555 gives 1250 as remainder.

It is not an unprimeable number, because it can be changed into a prime (125055559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13857 + ... + 21026.

It is an arithmetic number, because the mean of its divisors is an integer number (12558240).

Almost surely, 2^125055555 is an apocalyptic number.

125055555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125055555 is a deficient number, since it is larger than the sum of its proper divisors (75876285).

125055555 is a wasteful number, since it uses less digits than its factorization.

125055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35130.

The product of its (nonzero) digits is 31250, while the sum is 33.

The square root of 125055555 is about 11182.8241066378. The cubic root of 125055555 is about 500.0740623623.

The spelling of 125055555 in words is "one hundred twenty-five million, fifty-five thousand, five hundred fifty-five".