225733631 has 2 divisors, whose sum is σ = 225733632. Its totient is φ = 225733630.

The previous prime is 225733603. The next prime is 225733639. The reversal of 225733631 is 136337522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225733631 is a prime.

It is a super-2 number, since 2×225733631² = 101911344328888322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225733639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112866815 + 112866816.

It is an arithmetic number, because the mean of its divisors is an integer number (112866816).

Almost surely, 2^225733631 is an apocalyptic number.

225733631 is a deficient number, since it is larger than the sum of its proper divisors (1).

225733631 is an equidigital number, since it uses as much as digits as its factorization.

225733631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 32.

The square root of 225733631 is about 15024.4344652303. The cubic root of 225733631 is about 608.8805330426.

The spelling of 225733631 in words is "two hundred twenty-five million, seven hundred thirty-three thousand, six hundred thirty-one".