225666777511 has 12 divisors (see below), whose sum is σ = 262600739640. Its totient is φ = 193362051120.

The previous prime is 225666777503. The next prime is 225666777527. The reversal of 225666777511 is 115777666522.

It is not a de Polignac number, because 225666777511 - 2³ = 225666777503 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 (225666777311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 649045 + ... + 934126.

It is an arithmetic number, because the mean of its divisors is an integer number (21883394970).

Almost surely, 2^225666777511 is an apocalyptic number.

225666777511 is a deficient number, since it is larger than the sum of its proper divisors (36933962129).

225666777511 is a wasteful number, since it uses less digits than its factorization.

225666777511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586094 (or 1586087 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 55.

The spelling of 225666777511 in words is "two hundred twenty-five billion, six hundred sixty-six million, seven hundred seventy-seven thousand, five hundred eleven".