7225487 has 2 divisors, whose sum is σ = 7225488. Its totient is φ = 7225486.

The previous prime is 7225483. The next prime is 7225489. The reversal of 7225487 is 7845227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7225487 - 2² = 7225483 is a prime.

Together with 7225489, 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 (7225483) 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, 3612743 + 3612744.

It is an arithmetic number, because the mean of its divisors is an integer number (3612744).

Almost surely, 2^7225487 is an apocalyptic number.

7225487 is a deficient number, since it is larger than the sum of its proper divisors (1).

7225487 is an equidigital number, since it uses as much as digits as its factorization.

7225487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 35.

The square root of 7225487 is about 2688.0265995708. The cubic root of 7225487 is about 193.3254551553.

The spelling of 7225487 in words is "seven million, two hundred twenty-five thousand, four hundred eighty-seven".