250561005 has 8 divisors (see below), whose sum is σ = 400897632. Its totient is φ = 133632528.

The previous prime is 250560997. The next prime is 250561009. The reversal of 250561005 is 500165052.

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

It is not a de Polignac number, because 250561005 - 2³ = 250560997 is a prime.

It is a super-2 number, since 2×250561005² = 125561634453220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250561009) 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, 8352019 + ... + 8352048.

It is an arithmetic number, because the mean of its divisors is an integer number (50112204).

Almost surely, 2^250561005 is an apocalyptic number.

It is an amenable number.

250561005 is a deficient number, since it is larger than the sum of its proper divisors (150336627).

250561005 is a wasteful number, since it uses less digits than its factorization.

250561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16704075.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 250561005 is about 15829.1188952512. The cubic root of 250561005 is about 630.4313875869.

The spelling of 250561005 in words is "two hundred fifty million, five hundred sixty-one thousand, five".