8403525 has 72 divisors (see below), whose sum is σ = 17264520. Its totient is φ = 3893760.

The previous prime is 8403517. The next prime is 8403557. The reversal of 8403525 is 5253048.

8403525 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 8054244 + 349281 = 2838^2 + 591^2 .

It is not a de Polignac number, because 8403525 - 2³ = 8403517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 494317 + ... + 494333.

It is an arithmetic number, because the mean of its divisors is an integer number (239785).

Almost surely, 2^8403525 is an apocalyptic number.

8403525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8403525 is an abundant number, since it is smaller than the sum of its proper divisors (8860995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8403525 is a wasteful number, since it uses less digits than its factorization.

8403525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 8403525 is about 2898.8834057271. The cubic root of 8403525 is about 203.3077022845.

The spelling of 8403525 in words is "eight million, four hundred three thousand, five hundred twenty-five".