7557525 has 18 divisors (see below), whose sum is σ = 13536770. Its totient is φ = 4030560.

The previous prime is 7557523. The next prime is 7557541. The reversal of 7557525 is 5257557.

It can be written as a sum of positive squares in 3 ways, for example, as 2331729 + 5225796 = 1527^2 + 2286^2 .

It is not a de Polignac number, because 7557525 - 2¹ = 7557523 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7557525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7557523) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16570 + ... + 17019.

Almost surely, 2^7557525 is an apocalyptic number.

7557525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7557525 is a deficient number, since it is larger than the sum of its proper divisors (5979245).

7557525 is a wasteful number, since it uses less digits than its factorization.

7557525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33605 (or 33597 counting only the distinct ones).

The product of its digits is 61250, while the sum is 36.

The square root of 7557525 is about 2749.0953057324. The cubic root of 7557525 is about 196.2425585776.

Subtracting from 7557525 its reverse (5257557), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 75 and 57525, that added together give a square (57600 = 240²).

The spelling of 7557525 in words is "seven million, five hundred fifty-seven thousand, five hundred twenty-five".