7425557 has 2 divisors, whose sum is σ = 7425558. Its totient is φ = 7425556.

The previous prime is 7425553. The next prime is 7425571. The reversal of 7425557 is 7555247.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5885476 + 1540081 = 2426^2 + 1241^2 .

It is a cyclic number.

It is not a de Polignac number, because 7425557 - 2² = 7425553 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7425553) 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, 3712778 + 3712779.

It is an arithmetic number, because the mean of its divisors is an integer number (3712779).

Almost surely, 2^7425557 is an apocalyptic number.

It is an amenable number.

7425557 is a deficient number, since it is larger than the sum of its proper divisors (1).

7425557 is an equidigital number, since it uses as much as digits as its factorization.

7425557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49000, while the sum is 35.

The square root of 7425557 is about 2724.9875229072. The cubic root of 7425557 is about 195.0935952184.

The spelling of 7425557 in words is "seven million, four hundred twenty-five thousand, five hundred fifty-seven".