250005500261 has 32 divisors (see below), whose sum is σ = 280102648320. Its totient is φ = 221193907200.

The previous prime is 250005500221. The next prime is 250005500273. The reversal of 250005500261 is 162005500052.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250005500261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250005500261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250005500221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133193255 + ... + 133195131.

It is an arithmetic number, because the mean of its divisors is an integer number (8753207760).

Almost surely, 2^250005500261 is an apocalyptic number.

It is an amenable number.

250005500261 is a deficient number, since it is larger than the sum of its proper divisors (30097148059).

250005500261 is a wasteful number, since it uses less digits than its factorization.

250005500261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 250005500261 in words is "two hundred fifty billion, five million, five hundred thousand, two hundred sixty-one".