250275561 has 8 divisors (see below), whose sum is σ = 334244064. Its totient is φ = 166578720.

The previous prime is 250275559. The next prime is 250275569. The reversal of 250275561 is 165572052.

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

It is not a de Polignac number, because 250275561 - 2¹ = 250275559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (250275569) 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, 65755 + ... + 69456.

It is an arithmetic number, because the mean of its divisors is an integer number (41780508).

Almost surely, 2^250275561 is an apocalyptic number.

It is an amenable number.

250275561 is a deficient number, since it is larger than the sum of its proper divisors (83968503).

250275561 is a wasteful number, since it uses less digits than its factorization.

250275561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135831.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 250275561 is about 15820.0999048679. The cubic root of 250275561 is about 630.1918966952.

The spelling of 250275561 in words is "two hundred fifty million, two hundred seventy-five thousand, five hundred sixty-one".