425305553 has 2 divisors, whose sum is σ = 425305554. Its totient is φ = 425305552.

The previous prime is 425305513. The next prime is 425305577. The reversal of 425305553 is 355503524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377252929 + 48052624 = 19423^2 + 6932^2 .

It is a cyclic number.

It is not a de Polignac number, because 425305553 - 2²⁰ = 424256977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (425305513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212652776 + 212652777.

It is an arithmetic number, because the mean of its divisors is an integer number (212652777).

Almost surely, 2^425305553 is an apocalyptic number.

It is an amenable number.

425305553 is a deficient number, since it is larger than the sum of its proper divisors (1).

425305553 is an equidigital number, since it uses as much as digits as its factorization.

425305553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 32.

The square root of 425305553 is about 20622.9375453644. The cubic root of 425305553 is about 752.0274347025.

The spelling of 425305553 in words is "four hundred twenty-five million, three hundred five thousand, five hundred fifty-three".