250097985 has 24 divisors (see below), whose sum is σ = 445222440. Its totient is φ = 129779712.

The previous prime is 250097983. The next prime is 250097989. The reversal of 250097985 is 589790052.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 60980481 + 189117504 = 7809^2 + 13752^2 .

It is not a de Polignac number, because 250097985 - 2¹ = 250097983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 250097985.

It is not an unprimeable number, because it can be changed into a prime (250097983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73440 + ... + 76769.

It is an arithmetic number, because the mean of its divisors is an integer number (18550935).

Almost surely, 2^250097985 is an apocalyptic number.

It is an amenable number.

250097985 is a deficient number, since it is larger than the sum of its proper divisors (195124455).

250097985 is a wasteful number, since it uses less digits than its factorization.

250097985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150257 (or 150254 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 250097985 is about 15814.4865550545. The cubic root of 250097985 is about 630.0428164400.

The spelling of 250097985 in words is "two hundred fifty million, ninety-seven thousand, nine hundred eighty-five".