225518077 has 4 divisors (see below), whose sum is σ = 225580320. Its totient is φ = 225455836.

The previous prime is 225518063. The next prime is 225518089. The reversal of 225518077 is 770815522.

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 not a de Polignac number, because 225518077 - 2¹¹ = 225516029 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 (225518017) 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, 25327 + ... + 33052.

It is an arithmetic number, because the mean of its divisors is an integer number (56395080).

Almost surely, 2^225518077 is an apocalyptic number.

It is an amenable number.

225518077 is a deficient number, since it is larger than the sum of its proper divisors (62243).

225518077 is an equidigital number, since it uses as much as digits as its factorization.

225518077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62242.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 225518077 is about 15017.2593038810. The cubic root of 225518077 is about 608.6866637876.

It can be divided in two parts, 22551 and 8077, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 225518077 in words is "two hundred twenty-five million, five hundred eighteen thousand, seventy-seven".