1240025 has 12 divisors (see below), whose sum is σ = 1551612. Its totient is φ = 983040.

The previous prime is 1240021. The next prime is 1240027. The reversal of 1240025 is 5200421.

It can be written as a sum of positive squares in 6 ways, for example, as 3481 + 1236544 = 59^2 + 1112^2 .

It is not a de Polignac number, because 1240025 - 2² = 1240021 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1239991 and 1240009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240021) 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 11 ways as a sum of consecutive naturals, for example, 4697 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (129301).

2^1240025 is an apocalyptic number.

It is an amenable number.

1240025 is a deficient number, since it is larger than the sum of its proper divisors (311587).

1240025 is a wasteful number, since it uses less digits than its factorization.

1240025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1240025 is about 1113.5640978408. The cubic root of 1240025 is about 107.4344290948.

Adding to 1240025 its reverse (5200421), we get a palindrome (6440446).

The spelling of 1240025 in words is "one million, two hundred forty thousand, twenty-five".