225256514661 has 48 divisors (see below), whose sum is σ = 344936592000. Its totient is φ = 141366715776.

The previous prime is 225256514591. The next prime is 225256514663. The reversal of 225256514661 is 166415652522.

225256514661 is a `hidden beast` number, since 2 + 2 + 525 + 65 + 1 + 4 + 6 + 61 = 666.

It is not a de Polignac number, because 225256514661 - 2⁷ = 225256514533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225256514663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3328386 + ... + 3395388.

It is an arithmetic number, because the mean of its divisors is an integer number (7186179000).

Almost surely, 2^225256514661 is an apocalyptic number.

It is an amenable number.

225256514661 is a deficient number, since it is larger than the sum of its proper divisors (119680077339).

225256514661 is a wasteful number, since it uses less digits than its factorization.

225256514661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67290 (or 67287 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 225256514661 in words is "two hundred twenty-five billion, two hundred fifty-six million, five hundred fourteen thousand, six hundred sixty-one".