7840525 has 24 divisors (see below), whose sum is σ = 12124224. Its totient is φ = 4886400.

The previous prime is 7840523. The next prime is 7840537. The reversal of 7840525 is 5250487.

It is not a de Polignac number, because 7840525 - 2¹ = 7840523 is a prime.

It is a super-2 number, since 2×7840525² = 122947664551250, which contains 22 as substring.

7840525 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7840523) 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, 112 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (505176).

Almost surely, 2^7840525 is an apocalyptic number.

It is an amenable number.

7840525 is a deficient number, since it is larger than the sum of its proper divisors (4283699).

7840525 is a wasteful number, since it uses less digits than its factorization.

7840525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101 (or 4096 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 7840525 is about 2800.0937484306. The cubic root of 7840525 is about 198.6621119000.

The spelling of 7840525 in words is "seven million, eight hundred forty thousand, five hundred twenty-five".