7890525 has 18 divisors (see below), whose sum is σ = 14133210. Its totient is φ = 4208160.

The previous prime is 7890517. The next prime is 7890539. The reversal of 7890525 is 5250987.

It can be written as a sum of positive squares in 3 ways, for example, as 2442969 + 5447556 = 1563^2 + 2334^2 .

It is not a de Polignac number, because 7890525 - 2³ = 7890517 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 7890525.

It is a congruent 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 17 ways as a sum of consecutive naturals, for example, 17310 + ... + 17759.

Almost surely, 2^7890525 is an apocalyptic number.

7890525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7890525 is a deficient number, since it is larger than the sum of its proper divisors (6242685).

7890525 is a wasteful number, since it uses less digits than its factorization.

7890525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35085 (or 35077 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 7890525 is about 2809.0078319578. The cubic root of 7890525 is about 199.0835150248.

The spelling of 7890525 in words is "seven million, eight hundred ninety thousand, five hundred twenty-five".