125535555 has 32 divisors (see below), whose sum is σ = 226521600. Its totient is φ = 65948256.

The previous prime is 125535551. The next prime is 125535559. The reversal of 125535555 is 555535521.

125535555 is a `hidden beast` number, since 1 + 2 + 553 + 55 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (125535551) and next prime (125535559).

It is not a de Polignac number, because 125535555 - 2² = 125535551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125535551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2106 + ... + 15984.

It is an arithmetic number, because the mean of its divisors is an integer number (7078800).

Almost surely, 2^125535555 is an apocalyptic number.

125535555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125535555 is a deficient number, since it is larger than the sum of its proper divisors (100986045).

125535555 is a wasteful number, since it uses less digits than its factorization.

125535555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13960 (or 13954 counting only the distinct ones).

The product of its digits is 93750, while the sum is 36.

The square root of 125535555 is about 11204.2650361369. The cubic root of 125535555 is about 500.7130559523.

The spelling of 125535555 in words is "one hundred twenty-five million, five hundred thirty-five thousand, five hundred fifty-five".