250220505655 has 8 divisors (see below), whose sum is σ = 300803684832. Its totient is φ = 199817019168.

The previous prime is 250220505617. The next prime is 250220505659. The reversal of 250220505655 is 556505022052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 250220505655 - 2¹⁹ = 250219981367 is a prime.

It is a super-2 number, since 2×250220505655² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250220505659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44920107 + ... + 44925676.

It is an arithmetic number, because the mean of its divisors is an integer number (37600460604).

Almost surely, 2^250220505655 is an apocalyptic number.

250220505655 is a deficient number, since it is larger than the sum of its proper divisors (50583179177).

250220505655 is an equidigital number, since it uses as much as digits as its factorization.

250220505655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89846345.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 250220505655 in words is "two hundred fifty billion, two hundred twenty million, five hundred five thousand, six hundred fifty-five".