225291157 has 32 divisors (see below), whose sum is σ = 296013312. Its totient is φ = 166385664.

The previous prime is 225291139. The next prime is 225291193. The reversal of 225291157 is 751192522.

It is not a de Polignac number, because 225291157 - 2¹¹ = 225289109 is a prime.

It is a super-2 number, since 2×225291157² = 101512210844797298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225291107) 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 31 ways as a sum of consecutive naturals, for example, 211408 + ... + 212470.

It is an arithmetic number, because the mean of its divisors is an integer number (9250416).

Almost surely, 2^225291157 is an apocalyptic number.

It is an amenable number.

225291157 is a deficient number, since it is larger than the sum of its proper divisors (70722155).

225291157 is a wasteful number, since it uses less digits than its factorization.

225291157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237.

The product of its digits is 12600, while the sum is 34.

The square root of 225291157 is about 15009.7020956447. The cubic root of 225291157 is about 608.4824384283.

The spelling of 225291157 in words is "two hundred twenty-five million, two hundred ninety-one thousand, one hundred fifty-seven".