225602216261 has 4 divisors (see below), whose sum is σ = 225617442624. Its totient is φ = 225586989900.

The previous prime is 225602216249. The next prime is 225602216291. The reversal of 225602216261 is 162612206522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225602216261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225602216201) 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, 7590935 + ... + 7620596.

It is an arithmetic number, because the mean of its divisors is an integer number (56404360656).

Almost surely, 2^225602216261 is an apocalyptic number.

It is an amenable number.

225602216261 is a deficient number, since it is larger than the sum of its proper divisors (15226363).

225602216261 is a wasteful number, since it uses less digits than its factorization.

225602216261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15226362.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 225602216261 in words is "two hundred twenty-five billion, six hundred two million, two hundred sixteen thousand, two hundred sixty-one".