250438085 has 16 divisors (see below), whose sum is σ = 304372080. Its totient is φ = 197798400.

The previous prime is 250438061. The next prime is 250438093. The reversal of 250438085 is 580834052.

250438085 = 101² + 102² + ... + 909².

It can be written as a sum of positive squares in 8 ways, for example, as 1366561 + 249071524 = 1169^2 + 15782^2 .

It is not a de Polignac number, because 250438085 - 2⁶ = 250438021 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309161 + ... + 309969.

It is an arithmetic number, because the mean of its divisors is an integer number (19023255).

Almost surely, 2^250438085 is an apocalyptic number.

It is an amenable number.

250438085 is a deficient number, since it is larger than the sum of its proper divisors (53933995).

250438085 is a wasteful number, since it uses less digits than its factorization.

250438085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 250438085 is about 15825.2357012463. The cubic root of 250438085 is about 630.3282785633.

The spelling of 250438085 in words is "two hundred fifty million, four hundred thirty-eight thousand, eighty-five".