425522549 has 2 divisors, whose sum is σ = 425522550. Its totient is φ = 425522548.

The previous prime is 425522509. The next prime is 425522557. The reversal of 425522549 is 945225524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384434449 + 41088100 = 19607^2 + 6410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425522549 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 (425522509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212761274 + 212761275.

It is an arithmetic number, because the mean of its divisors is an integer number (212761275).

Almost surely, 2^425522549 is an apocalyptic number.

It is an amenable number.

425522549 is a deficient number, since it is larger than the sum of its proper divisors (1).

425522549 is an equidigital number, since it uses as much as digits as its factorization.

425522549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 38.

The square root of 425522549 is about 20628.1979096575. The cubic root of 425522549 is about 752.1553107660.

The spelling of 425522549 in words is "four hundred twenty-five million, five hundred twenty-two thousand, five hundred forty-nine".