225620163431 has 8 divisors (see below), whose sum is σ = 242983278384. Its totient is φ = 208258151040.

The previous prime is 225620163421. The next prime is 225620163449. The reversal of 225620163431 is 134361026522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225620163431 - 2¹⁴ = 225620147047 is a prime.

It is a super-2 number, since 2×225620163431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225620163391 and 225620163400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225620163401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176900 + ... + 694646.

It is an arithmetic number, because the mean of its divisors is an integer number (30372909798).

Almost surely, 2^225620163431 is an apocalyptic number.

225620163431 is a deficient number, since it is larger than the sum of its proper divisors (17363114953).

225620163431 is a wasteful number, since it uses less digits than its factorization.

225620163431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551281.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 225620163431 its reverse (134361026522), we get a palindrome (359981189953).

The spelling of 225620163431 in words is "two hundred twenty-five billion, six hundred twenty million, one hundred sixty-three thousand, four hundred thirty-one".