125055066655 has 4 divisors (see below), whose sum is σ = 150066079992. Its totient is φ = 100044053320.

The previous prime is 125055066649. The next prime is 125055066673. The reversal of 125055066655 is 556660550521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 125055066655 - 2⁷ = 125055066527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12505506661 + ... + 12505506670.

It is an arithmetic number, because the mean of its divisors is an integer number (37516519998).

Almost surely, 2^125055066655 is an apocalyptic number.

125055066655 is a deficient number, since it is larger than the sum of its proper divisors (25011013337).

125055066655 is an equidigital number, since it uses as much as digits as its factorization.

125055066655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25011013336.

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 125055066655 in words is "one hundred twenty-five billion, fifty-five million, sixty-six thousand, six hundred fifty-five".