7525539 has 24 divisors (see below), whose sum is σ = 13079040. Its totient is φ = 4073328.

The previous prime is 7525519. The next prime is 7525571. The reversal of 7525539 is 9355257.

7525539 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7525539 - 2⁷ = 7525411 is a prime.

7525539 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7525519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1947 + ... + 4340.

It is an arithmetic number, because the mean of its divisors is an integer number (544960).

Almost surely, 2^7525539 is an apocalyptic number.

7525539 is a deficient number, since it is larger than the sum of its proper divisors (5553501).

7525539 is a wasteful number, since it uses less digits than its factorization.

7525539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319 (or 6316 counting only the distinct ones).

The product of its digits is 47250, while the sum is 36.

The square root of 7525539 is about 2743.2715869924. The cubic root of 7525539 is about 195.9653121315.

The spelling of 7525539 in words is "seven million, five hundred twenty-five thousand, five hundred thirty-nine".