225544810651 has 4 divisors (see below), whose sum is σ = 238812152472. Its totient is φ = 212277468832.

The previous prime is 225544810649. The next prime is 225544810669. The reversal of 225544810651 is 156018445522.

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 225544810651 - 2¹ = 225544810649 is a prime.

It is a super-2 number, since 2×225544810651² (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 = 225544810598 and 225544810607.

It is not an unprimeable number, because it can be changed into a prime (225544810681) 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, 6633670885 + ... + 6633670918.

It is an arithmetic number, because the mean of its divisors is an integer number (59703038118).

Almost surely, 2^225544810651 is an apocalyptic number.

225544810651 is a deficient number, since it is larger than the sum of its proper divisors (13267341821).

225544810651 is a wasteful number, since it uses less digits than its factorization.

225544810651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13267341820.

The product of its (nonzero) digits is 384000, while the sum is 43.

The spelling of 225544810651 in words is "two hundred twenty-five billion, five hundred forty-four million, eight hundred ten thousand, six hundred fifty-one".