225148338581 has 2 divisors, whose sum is σ = 225148338582. Its totient is φ = 225148338580.

The previous prime is 225148338563. The next prime is 225148338599. The reversal of 225148338581 is 185833841522.

It is a balanced prime because it is at equal distance from previous prime (225148338563) and next prime (225148338599).

It can be written as a sum of positive squares in only one way, i.e., 221614036081 + 3534302500 = 470759^2 + 59450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225148338581 is a prime.

It is a super-2 number, since 2×225148338581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225148337581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112574169290 + 112574169291.

It is an arithmetic number, because the mean of its divisors is an integer number (112574169291).

Almost surely, 2^225148338581 is an apocalyptic number.

It is an amenable number.

225148338581 is a deficient number, since it is larger than the sum of its proper divisors (1).

225148338581 is an equidigital number, since it uses as much as digits as its factorization.

225148338581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843200, while the sum is 50.

The spelling of 225148338581 in words is "two hundred twenty-five billion, one hundred forty-eight million, three hundred thirty-eight thousand, five hundred eighty-one".