7525517 has 2 divisors, whose sum is σ = 7525518. Its totient is φ = 7525516.

The previous prime is 7525513. The next prime is 7525519. The reversal of 7525517 is 7155257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7123561 + 401956 = 2669^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 7525517 - 2² = 7525513 is a prime.

It is a super-2 number, since 2×7525517² = 113266812234578, which contains 22 as substring.

Together with 7525519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7525513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3762758 + 3762759.

It is an arithmetic number, because the mean of its divisors is an integer number (3762759).

Almost surely, 2^7525517 is an apocalyptic number.

It is an amenable number.

7525517 is a deficient number, since it is larger than the sum of its proper divisors (1).

7525517 is an equidigital number, since it uses as much as digits as its factorization.

7525517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12250, while the sum is 32.

The square root of 7525517 is about 2743.2675771787. The cubic root of 7525517 is about 195.9651211711.

The spelling of 7525517 in words is "seven million, five hundred twenty-five thousand, five hundred seventeen".