125500555 has 16 divisors (see below), whose sum is σ = 158402304. Its totient is φ = 95322240.

The previous prime is 125500547. The next prime is 125500577. The reversal of 125500555 is 555005521.

It is a happy number.

It is not a de Polignac number, because 125500555 - 2³ = 125500547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577 + ... + 15853.

It is an arithmetic number, because the mean of its divisors is an integer number (9900144).

Almost surely, 2^125500555 is an apocalyptic number.

125500555 is a deficient number, since it is larger than the sum of its proper divisors (32901749).

125500555 is a wasteful number, since it uses less digits than its factorization.

125500555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15366.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 125500555 is about 11202.7030220389. The cubic root of 125500555 is about 500.6665177800. Note that the first 3 decimals are identical.

The spelling of 125500555 in words is "one hundred twenty-five million, five hundred thousand, five hundred fifty-five".