225731631025 has 24 divisors (see below), whose sum is σ = 281119221504. Its totient is φ = 179804102400.

The previous prime is 225731631019. The next prime is 225731631061. The reversal of 225731631025 is 520136137522.

It is a happy number.

It is not a de Polignac number, because 225731631025 - 2⁷ = 225731630897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14200632 + ... + 14216518.

It is an arithmetic number, because the mean of its divisors is an integer number (11713300896).

Almost surely, 2^225731631025 is an apocalyptic number.

225731631025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225731631025 is a deficient number, since it is larger than the sum of its proper divisors (55387590479).

225731631025 is a wasteful number, since it uses less digits than its factorization.

225731631025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18321 (or 18316 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

Adding to 225731631025 its reverse (520136137522), we get a palindrome (745867768547).

The spelling of 225731631025 in words is "two hundred twenty-five billion, seven hundred thirty-one million, six hundred thirty-one thousand, twenty-five".