7525520 has 40 divisors (see below), whose sum is σ = 18421440. Its totient is φ = 2851200.

The previous prime is 7525519. The next prime is 7525571. The reversal of 7525520 is 255257.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 7525520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956 + ... + 3995.

It is an arithmetic number, because the mean of its divisors is an integer number (460536).

Almost surely, 2^7525520 is an apocalyptic number.

It is an amenable number.

7525520 is an abundant number, since it is smaller than the sum of its proper divisors (10895920).

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

7525520 is a wasteful number, since it uses less digits than its factorization.

7525520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4983 (or 4977 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 7525520 is about 2743.2681239718. The cubic root of 7525520 is about 195.9651472111.

The spelling of 7525520 in words is "seven million, five hundred twenty-five thousand, five hundred twenty".