7425281 has 2 divisors, whose sum is σ = 7425282. Its totient is φ = 7425280.

The previous prime is 7425259. The next prime is 7425307. The reversal of 7425281 is 1825247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6677056 + 748225 = 2584^2 + 865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7425281 is a prime.

It is a super-2 number, since 2×7425281² = 110269595857922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7425581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3712640 + 3712641.

It is an arithmetic number, because the mean of its divisors is an integer number (3712641).

Almost surely, 2^7425281 is an apocalyptic number.

It is an amenable number.

7425281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7425281 is an equidigital number, since it uses as much as digits as its factorization.

7425281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 7425281 is about 2724.9368800029. The cubic root of 7425281 is about 195.0911780485.

The spelling of 7425281 in words is "seven million, four hundred twenty-five thousand, two hundred eighty-one".