55251725666 has 16 divisors (see below), whose sum is σ = 87161923584. Its totient is φ = 26216666784.

The previous prime is 55251725611. The next prime is 55251725713. The reversal of 55251725666 is 66652715255.

55251725666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4722995 + ... + 4734678.

It is an arithmetic number, because the mean of its divisors is an integer number (5447620224).

Almost surely, 2^55251725666 is an apocalyptic number.

55251725666 is a deficient number, since it is larger than the sum of its proper divisors (31910197918).

55251725666 is a wasteful number, since it uses less digits than its factorization.

55251725666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457825.

The product of its digits is 3780000, while the sum is 50.

The spelling of 55251725666 in words is "fifty-five billion, two hundred fifty-one million, seven hundred twenty-five thousand, six hundred sixty-six".