422575725 has 144 divisors (see below), whose sum is σ = 868819392. Its totient is φ = 178560000.

The previous prime is 422575723. The next prime is 422575753. The reversal of 422575725 is 527575224.

It is not a de Polignac number, because 422575725 - 2¹ = 422575723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

Its product of digits (196000) is a multiple of the sum of its prime factors (140).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422575723) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10306705 + ... + 10306745.

It is an arithmetic number, because the mean of its divisors is an integer number (6033468).

Almost surely, 2^422575725 is an apocalyptic number.

It is an amenable number.

422575725 is an abundant number, since it is smaller than the sum of its proper divisors (446243667).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422575725 is a wasteful number, since it uses less digits than its factorization.

422575725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 104 counting only the distinct ones).

The product of its digits is 196000, while the sum is 39.

The square root of 422575725 is about 20556.6467353019. The cubic root of 422575725 is about 750.4150147524.

The spelling of 422575725 in words is "four hundred twenty-two million, five hundred seventy-five thousand, seven hundred twenty-five".