225391689342 has 64 divisors (see below), whose sum is σ = 513020175360. Its totient is φ = 73311521472.

The previous prime is 225391689301. The next prime is 225391689343. The reversal of 225391689342 is 243986193522.

225391689342 is a `hidden beast` number, since 2 + 2 + 539 + 1 + 68 + 9 + 3 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225391689343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2351643 + ... + 2445609.

It is an arithmetic number, because the mean of its divisors is an integer number (8015940240).

Almost surely, 2^225391689342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225391689342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256510087680).

225391689342 is an abundant number, since it is smaller than the sum of its proper divisors (287628486018).

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

225391689342 is a wasteful number, since it uses less digits than its factorization.

225391689342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95054 (or 95048 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 225391689342 in words is "two hundred twenty-five billion, three hundred ninety-one million, six hundred eighty-nine thousand, three hundred forty-two".