225020431 has 4 divisors (see below), whose sum is σ = 234803952. Its totient is φ = 215236912.

The previous prime is 225020429. The next prime is 225020447. The reversal of 225020431 is 134020522.

225020431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225020431 - 2¹ = 225020429 is a prime.

It is a super-2 number, since 2×225020431² = 101268388734851522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225020399 and 225020408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225021431) 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, 4891726 + ... + 4891771.

It is an arithmetic number, because the mean of its divisors is an integer number (58700988).

Almost surely, 2^225020431 is an apocalyptic number.

225020431 is a deficient number, since it is larger than the sum of its proper divisors (9783521).

225020431 is an equidigital number, since it uses as much as digits as its factorization.

225020431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9783520.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 225020431 is about 15000.6810178738. The cubic root of 225020431 is about 608.2386086992.

Adding to 225020431 its reverse (134020522), we get a palindrome (359040953).

Subtracting from 225020431 its reverse (134020522), we obtain a palindrome (90999909).

The spelling of 225020431 in words is "two hundred twenty-five million, twenty thousand, four hundred thirty-one".