55251725667 has 4 divisors (see below), whose sum is σ = 73668967560. Its totient is φ = 36834483776.

The previous prime is 55251725611. The next prime is 55251725713. The reversal of 55251725667 is 76652715255.

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

It is a cyclic number.

It is not a de Polignac number, because 55251725667 - 2¹⁸ = 55251463523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55251725267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9208620942 + ... + 9208620947.

It is an arithmetic number, because the mean of its divisors is an integer number (18417241890).

Almost surely, 2^55251725667 is an apocalyptic number.

55251725667 is a deficient number, since it is larger than the sum of its proper divisors (18417241893).

55251725667 is a wasteful number, since it uses less digits than its factorization.

55251725667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18417241892.

The product of its digits is 4410000, while the sum is 51.

The spelling of 55251725667 in words is "fifty-five billion, two hundred fifty-one million, seven hundred twenty-five thousand, six hundred sixty-seven".