225671756643 has 16 divisors (see below), whose sum is σ = 334382109600. Its totient is φ = 150423726240.

The previous prime is 225671756581. The next prime is 225671756657. The reversal of 225671756643 is 346657176522.

225671756643 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 71 + 7 + 566 + 4 + 3 = 666.

It is not a de Polignac number, because 225671756643 - 2⁶ = 225671756579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225671756643.

It is not an unprimeable number, because it can be changed into a prime (225671756243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497368 + ... + 835893.

It is an arithmetic number, because the mean of its divisors is an integer number (20898881850).

Almost surely, 2^225671756643 is an apocalyptic number.

225671756643 is a deficient number, since it is larger than the sum of its proper divisors (108710352957).

225671756643 is a wasteful number, since it uses less digits than its factorization.

225671756643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339539 (or 1339533 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 54.

The spelling of 225671756643 in words is "two hundred twenty-five billion, six hundred seventy-one million, seven hundred fifty-six thousand, six hundred forty-three".