422725081 has 4 divisors (see below), whose sum is σ = 426829312. Its totient is φ = 418620852.

The previous prime is 422725063. The next prime is 422725103. The reversal of 422725081 is 180527224.

It is a happy number.

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 422725081 - 2⁹ = 422724569 is a prime.

It is a super-2 number, since 2×422725081² = 357392988212913122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422725031) 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, 2051961 + ... + 2052166.

It is an arithmetic number, because the mean of its divisors is an integer number (106707328).

Almost surely, 2^422725081 is an apocalyptic number.

It is an amenable number.

422725081 is a deficient number, since it is larger than the sum of its proper divisors (4104231).

422725081 is a wasteful number, since it uses less digits than its factorization.

422725081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104230.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 422725081 is about 20560.2792053026. The cubic root of 422725081 is about 750.5034137276.

The spelling of 422725081 in words is "four hundred twenty-two million, seven hundred twenty-five thousand, eighty-one".