225953971 has 4 divisors (see below), whose sum is σ = 228676392. Its totient is φ = 223231552.

The previous prime is 225953969. The next prime is 225953977. The reversal of 225953971 is 179359522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225953971 - 2¹ = 225953969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225953977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1361086 + ... + 1361251.

It is an arithmetic number, because the mean of its divisors is an integer number (57169098).

Almost surely, 2^225953971 is an apocalyptic number.

225953971 is a deficient number, since it is larger than the sum of its proper divisors (2722421).

225953971 is an equidigital number, since it uses as much as digits as its factorization.

225953971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722420.

The product of its digits is 170100, while the sum is 43.

The square root of 225953971 is about 15031.7653986483. The cubic root of 225953971 is about 609.0785793092.

The spelling of 225953971 in words is "two hundred twenty-five million, nine hundred fifty-three thousand, nine hundred seventy-one".