7940825 has 12 divisors (see below), whose sum is σ = 9904128. Its totient is φ = 6315600.

The previous prime is 7940813. The next prime is 7940833. The reversal of 7940825 is 5280497.

It is a happy number.

It is not a de Polignac number, because 7940825 - 2⁶ = 7940761 is a prime.

It is a d-powerful number, because it can be written as 7⁸ + 9³ + 4² + 0 + 8⁷ + 2 + 5⁷ .

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 3944 + ... + 5606.

It is an arithmetic number, because the mean of its divisors is an integer number (825344).

Almost surely, 2^7940825 is an apocalyptic number.

It is an amenable number.

7940825 is a deficient number, since it is larger than the sum of its proper divisors (1963303).

7940825 is a wasteful number, since it uses less digits than its factorization.

7940825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 7940825 is about 2817.9469476908. The cubic root of 7940825 is about 199.5056541175.

It can be divided in two parts, 79 and 40825, that added together give a palindrome (40904).

The spelling of 7940825 in words is "seven million, nine hundred forty thousand, eight hundred twenty-five".