225231155425 has 12 divisors (see below), whose sum is σ = 286834921276. Its totient is φ = 175315060800.

The previous prime is 225231155423. The next prime is 225231155491. The reversal of 225231155425 is 524551132522.

It can be written as a sum of positive squares in 6 ways, for example, as 10935303184 + 214295852241 = 104572^2 + 462921^2 .

It is not a de Polignac number, because 225231155425 - 2¹ = 225231155423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225231155423) 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 11 ways as a sum of consecutive naturals, for example, 121745646 + ... + 121747495.

Almost surely, 2^225231155425 is an apocalyptic number.

225231155425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225231155425 is a deficient number, since it is larger than the sum of its proper divisors (61603765851).

225231155425 is a wasteful number, since it uses less digits than its factorization.

225231155425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243493188 (or 243493183 counting only the distinct ones).

The product of its digits is 120000, while the sum is 37.

Adding to 225231155425 its reverse (524551132522), we get a palindrome (749782287947).

The spelling of 225231155425 in words is "two hundred twenty-five billion, two hundred thirty-one million, one hundred fifty-five thousand, four hundred twenty-five".