425235220 has 24 divisors (see below), whose sum is σ = 905229864. Its totient is φ = 167763456.

The previous prime is 425235169. The next prime is 425235233. The reversal of 425235220 is 22532524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42172036 + 383063184 = 6494^2 + 19572^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144169 + ... + 147088.

It is an arithmetic number, because the mean of its divisors is an integer number (37717911).

Almost surely, 2^425235220 is an apocalyptic number.

It is an amenable number.

425235220 is an abundant number, since it is smaller than the sum of its proper divisors (479994644).

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

425235220 is a wasteful number, since it uses less digits than its factorization.

425235220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291339 (or 291337 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 425235220 is about 20621.2322619188. The cubic root of 425235220 is about 751.9859780281.

Adding to 425235220 its reverse (22532524), we get a palindrome (447767744).

The spelling of 425235220 in words is "four hundred twenty-five million, two hundred thirty-five thousand, two hundred twenty".