1250985 has 8 divisors (see below), whose sum is σ = 2001600. Its totient is φ = 667184.

The previous prime is 1250983. The next prime is 1251011. The reversal of 1250985 is 5890521.

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

It is a cyclic number.

It is not a de Polignac number, because 1250985 - 2¹ = 1250983 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1250981) 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, 41685 + ... + 41714.

It is an arithmetic number, because the mean of its divisors is an integer number (250200).

2^1250985 is an apocalyptic number.

1250985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1250985 is a deficient number, since it is larger than the sum of its proper divisors (750615).

1250985 is an equidigital number, since it uses as much as digits as its factorization.

1250985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83407.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1250985 is about 1118.4744073961. The cubic root of 1250985 is about 107.7500219816.

It can be divided in two parts, 1 and 250985, that added together give a triangular number (250986 = T₇₀₈).

The spelling of 1250985 in words is "one million, two hundred fifty thousand, nine hundred eighty-five".