10249985 has 8 divisors (see below), whose sum is σ = 12422376. Its totient is φ = 8118400.

The previous prime is 10249979. The next prime is 10250017. The reversal of 10249985 is 58994201.

It can be written as a sum of positive squares in 4 ways, for example, as 3301489 + 6948496 = 1817^2 + 2636^2 .

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

It is not a de Polignac number, because 10249985 - 2¹⁸ = 9987841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9644 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (1552797).

Almost surely, 2^10249985 is an apocalyptic number.

It is an amenable number.

10249985 is a deficient number, since it is larger than the sum of its proper divisors (2172391).

10249985 is a wasteful number, since it uses less digits than its factorization.

10249985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20403.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 10249985 is about 3201.5597761091. The cubic root of 10249985 is about 217.2239683254.

The spelling of 10249985 in words is "ten million, two hundred forty-nine thousand, nine hundred eighty-five".