425231549 has 4 divisors (see below), whose sum is σ = 432202620. Its totient is φ = 418260480.

The previous prime is 425231539. The next prime is 425231581. The reversal of 425231549 is 945132524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47706649 + 377524900 = 6907^2 + 19430^2 .

It is a cyclic number.

It is not a de Polignac number, because 425231549 - 2⁸ = 425231293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425231539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3485444 + ... + 3485565.

It is an arithmetic number, because the mean of its divisors is an integer number (108050655).

Almost surely, 2^425231549 is an apocalyptic number.

It is an amenable number.

425231549 is a deficient number, since it is larger than the sum of its proper divisors (6971071).

425231549 is an equidigital number, since it uses as much as digits as its factorization.

425231549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971070.

The product of its digits is 43200, while the sum is 35.

The square root of 425231549 is about 20621.1432515271. The cubic root of 425231549 is about 751.9838140897.

The spelling of 425231549 in words is "four hundred twenty-five million, two hundred thirty-one thousand, five hundred forty-nine".