250078081 has 6 divisors (see below), whose sum is σ = 274879346. Its totient is φ = 227343600.

The previous prime is 250078069. The next prime is 250078091. The reversal of 250078081 is 180870052.

It can be written as a sum of positive squares in only one way, i.e., 161417025 + 88661056 = 12705^2 + 9416^2 .

It is not a de Polignac number, because 250078081 - 2¹⁹ = 249553793 is a prime.

It is a super-2 number, since 2×250078081² = 125078093193285122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250078001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1033260 + ... + 1033501.

Almost surely, 2^250078081 is an apocalyptic number.

It is an amenable number.

250078081 is a deficient number, since it is larger than the sum of its proper divisors (24801265).

250078081 is a wasteful number, since it uses less digits than its factorization.

250078081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066783 (or 2066772 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 250078081 is about 15813.8572460991. The cubic root of 250078081 is about 630.0261020511.

The spelling of 250078081 in words is "two hundred fifty million, seventy-eight thousand, eighty-one".