425638273 has 4 divisors (see below), whose sum is σ = 427655728. Its totient is φ = 423620820.

The previous prime is 425638237. The next prime is 425638289. The reversal of 425638273 is 372836524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425638273 - 2²⁵ = 392083841 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (425638223) 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, 1008411 + ... + 1008832.

It is an arithmetic number, because the mean of its divisors is an integer number (106913932).

Almost surely, 2^425638273 is an apocalyptic number.

It is an amenable number.

425638273 is a deficient number, since it is larger than the sum of its proper divisors (2017455).

425638273 is a wasteful number, since it uses less digits than its factorization.

425638273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017454.

The product of its digits is 241920, while the sum is 40.

The square root of 425638273 is about 20631.0027143617. The cubic root of 425638273 is about 752.2234893165.

The spelling of 425638273 in words is "four hundred twenty-five million, six hundred thirty-eight thousand, two hundred seventy-three".