225651561622 has 4 divisors (see below), whose sum is σ = 338477342436. Its totient is φ = 112825780810.

The previous prime is 225651561493. The next prime is 225651561631. The reversal of 225651561622 is 226165156522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 226165156522 = 2 ⋅113082578261.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 56412890404 + ... + 56412890407.

It is an arithmetic number, because the mean of its divisors is an integer number (84619335609).

Almost surely, 2^225651561622 is an apocalyptic number.

225651561622 is a deficient number, since it is larger than the sum of its proper divisors (112825780814).

225651561622 is a wasteful number, since it uses less digits than its factorization.

225651561622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112825780813.

The product of its digits is 432000, while the sum is 43.

The spelling of 225651561622 in words is "two hundred twenty-five billion, six hundred fifty-one million, five hundred sixty-one thousand, six hundred twenty-two".