125625555 has 24 divisors (see below), whose sum is σ = 237547440. Its totient is φ = 60909120.

The previous prime is 125625553. The next prime is 125625569. The reversal of 125625555 is 555526521.

125625555 is a `hidden beast` number, since 1 + 25 + 625 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 125625555 - 2¹ = 125625553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125625553) 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 23 ways as a sum of consecutive naturals, for example, 126400 + ... + 127389.

It is an arithmetic number, because the mean of its divisors is an integer number (9897810).

Almost surely, 2^125625555 is an apocalyptic number.

125625555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125625555 is a deficient number, since it is larger than the sum of its proper divisors (111921885).

125625555 is a wasteful number, since it uses less digits than its factorization.

125625555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253811 (or 253808 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 125625555 is about 11208.2806442380. The cubic root of 125625555 is about 500.8326858321.

The spelling of 125625555 in words is "one hundred twenty-five million, six hundred twenty-five thousand, five hundred fifty-five".