225090466969 has 3 divisors (see below), whose sum is σ = 225090941407. Its totient is φ = 225089992532.

The previous prime is 225090466919. The next prime is 225090466973. The reversal of 225090466969 is 969664090522.

The square root of 225090466969 is 474437.

It is a perfect power (a square), and thus also a powerful number.

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.

It can be written as a sum of positive squares in only one way, i.e., 129740438025 + 95350028944 = 360195^2 + 308788^2 .

It is a de Polignac number, because none of the positive numbers 2^k-225090466969 is a prime.

It is a super-2 number, since 2×225090466969² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225090466919) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 237219 + ... + 711655.

Almost surely, 2^225090466969 is an apocalyptic number.

225090466969 is the 474437-th square number.

225090466969 is the 237219-th centered octagonal number.

It is an amenable number.

225090466969 is a deficient number, since it is larger than the sum of its proper divisors (474438).

225090466969 is an frugal number, since it uses more digits than its factorization.

225090466969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948874 (or 474437 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 225090466969 in words is "two hundred twenty-five billion, ninety million, four hundred sixty-six thousand, nine hundred sixty-nine".