7525445 has 4 divisors (see below), whose sum is σ = 9030540. Its totient is φ = 6020352.

The previous prime is 7525433. The next prime is 7525451. The reversal of 7525445 is 5445257.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 982081 + 6543364 = 991^2 + 2558^2 .

It is a cyclic number.

It is not a de Polignac number, because 7525445 - 2⁴ = 7525429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752540 + ... + 752549.

It is an arithmetic number, because the mean of its divisors is an integer number (2257635).

Almost surely, 2^7525445 is an apocalyptic number.

It is an amenable number.

7525445 is a deficient number, since it is larger than the sum of its proper divisors (1505095).

7525445 is a wasteful number, since it uses less digits than its factorization.

7525445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505094.

The product of its digits is 28000, while the sum is 32.

The square root of 7525445 is about 2743.2544541110. The cubic root of 7525445 is about 195.9644962070.

The spelling of 7525445 in words is "seven million, five hundred twenty-five thousand, four hundred forty-five".