125995555 has 16 divisors (see below), whose sum is σ = 181889280. Its totient is φ = 81849312.

The previous prime is 125995553. The next prime is 125995559. The reversal of 125995555 is 555599521.

It is a cyclic number.

It is not a de Polignac number, because 125995555 - 2¹ = 125995553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125995553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94069 + ... + 95398.

It is an arithmetic number, because the mean of its divisors is an integer number (11368080).

Almost surely, 2^125995555 is an apocalyptic number.

125995555 is a deficient number, since it is larger than the sum of its proper divisors (55893725).

125995555 is a wasteful number, since it uses less digits than its factorization.

125995555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189498.

The product of its digits is 506250, while the sum is 46.

The square root of 125995555 is about 11224.7741625389. The cubic root of 125995555 is about 501.3238981601.

The spelling of 125995555 in words is "one hundred twenty-five million, nine hundred ninety-five thousand, five hundred fifty-five".