425728733 has 4 divisors (see below), whose sum is σ = 428836380. Its totient is φ = 422621088.

The previous prime is 425728717. The next prime is 425728747. The reversal of 425728733 is 337827524.

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 107391769 + 318336964 = 10363^2 + 17842^2 .

It is a cyclic number.

It is not a de Polignac number, because 425728733 - 2⁴ = 425728717 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 (425728703) 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, 1553618 + ... + 1553891.

It is an arithmetic number, because the mean of its divisors is an integer number (107209095).

Almost surely, 2^425728733 is an apocalyptic number.

It is an amenable number.

425728733 is a deficient number, since it is larger than the sum of its proper divisors (3107647).

425728733 is a wasteful number, since it uses less digits than its factorization.

425728733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107646.

The product of its digits is 282240, while the sum is 41.

The square root of 425728733 is about 20633.1949295304. The cubic root of 425728733 is about 752.2767750297.

The spelling of 425728733 in words is "four hundred twenty-five million, seven hundred twenty-eight thousand, seven hundred thirty-three".