7525891 has 2 divisors, whose sum is σ = 7525892. Its totient is φ = 7525890.

The previous prime is 7525867. The next prime is 7525907. The reversal of 7525891 is 1985257.

It is a strong prime.

It is an emirp because it is prime and its reverse (1985257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7525891 - 2²¹ = 5428739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7525891.

It is not a weakly prime, because it can be changed into another prime (7525291) by changing a digit.

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 as a sum of consecutive naturals, namely, 3762945 + 3762946.

It is an arithmetic number, because the mean of its divisors is an integer number (3762946).

Almost surely, 2^7525891 is an apocalyptic number.

7525891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7525891 is an equidigital number, since it uses as much as digits as its factorization.

7525891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 37.

The square root of 7525891 is about 2743.3357432148. The cubic root of 7525891 is about 195.9683674482.

The spelling of 7525891 in words is "seven million, five hundred twenty-five thousand, eight hundred ninety-one".