1244825 has 24 divisors (see below), whose sum is σ = 1707480. Its totient is φ = 896000.

The previous prime is 1244821. The next prime is 1244833. The reversal of 1244825 is 5284421.

1244825 = 90² + 91² + ... + 164².

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 8281 + 1236544 = 91^2 + 1112^2 .

It is not a de Polignac number, because 1244825 - 2² = 1244821 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1244794 and 1244803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12275 + ... + 12375.

It is an arithmetic number, because the mean of its divisors is an integer number (71145).

2^1244825 is an apocalyptic number.

It is an amenable number.

1244825 is a deficient number, since it is larger than the sum of its proper divisors (462655).

1244825 is a wasteful number, since it uses less digits than its factorization.

1244825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 152 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 1244825 is about 1115.7172580901. The cubic root of 1244825 is about 107.5728728896.

The spelling of 1244825 in words is "one million, two hundred forty-four thousand, eight hundred twenty-five".