7825243 has 4 divisors (see below), whose sum is σ = 7832088. Its totient is φ = 7818400.

The previous prime is 7825217. The next prime is 7825247. The reversal of 7825243 is 3425287.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3425287 = 691 ⋅4957.

It is a cyclic number.

It is not a de Polignac number, because 7825243 - 2⁹ = 7824731 is a prime.

It is a super-2 number, since 2×7825243² = 122468856018098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

7825243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7825247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246 + ... + 4147.

It is an arithmetic number, because the mean of its divisors is an integer number (1958022).

Almost surely, 2^7825243 is an apocalyptic number.

7825243 is a deficient number, since it is larger than the sum of its proper divisors (6845).

7825243 is a wasteful number, since it uses less digits than its factorization.

7825243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844.

The product of its digits is 13440, while the sum is 31.

The square root of 7825243 is about 2797.3635802305. The cubic root of 7825243 is about 198.5329569010.

The spelling of 7825243 in words is "seven million, eight hundred twenty-five thousand, two hundred forty-three".