425549 has 2 divisors, whose sum is σ = 425550. Its totient is φ = 425548.

The previous prime is 425533. The next prime is 425563. The reversal of 425549 is 945524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413449 + 12100 = 643^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 425549 - 2⁴ = 425533 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 (425519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212774 + 212775.

It is an arithmetic number, because the mean of its divisors is an integer number (212775).

2⁴²⁵⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

425549 is a deficient number, since it is larger than the sum of its proper divisors (1).

425549 is an equidigital number, since it uses as much as digits as its factorization.

425549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 425549 is about 652.3411684081. The cubic root of 425549 is about 75.2170895407.

The spelling of 425549 in words is "four hundred twenty-five thousand, five hundred forty-nine".