225342811 has 4 divisors (see below), whose sum is σ = 225373824. Its totient is φ = 225311800.

The previous prime is 225342797. The next prime is 225342829. The reversal of 225342811 is 118243522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 118243522 = 2 ⋅59121761.

It is a cyclic number.

It is not a de Polignac number, because 225342811 - 2¹⁷ = 225211739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225342811.

It is not an unprimeable number, because it can be changed into a prime (225342851) 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, 1926 + ... + 21316.

It is an arithmetic number, because the mean of its divisors is an integer number (56343456).

Almost surely, 2^225342811 is an apocalyptic number.

225342811 is a deficient number, since it is larger than the sum of its proper divisors (31013).

225342811 is a wasteful number, since it uses less digits than its factorization.

225342811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31012.

The product of its digits is 3840, while the sum is 28.

The square root of 225342811 is about 15011.4226840763. The cubic root of 225342811 is about 608.5289384781.

The spelling of 225342811 in words is "two hundred twenty-five million, three hundred forty-two thousand, eight hundred eleven".