225784531499 has 2 divisors, whose sum is σ = 225784531500. Its totient is φ = 225784531498.

The previous prime is 225784531463. The next prime is 225784531519. The reversal of 225784531499 is 994135487522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225784531499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (225784531439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112892265749 + 112892265750.

It is an arithmetic number, because the mean of its divisors is an integer number (112892265750).

Almost surely, 2^225784531499 is an apocalyptic number.

225784531499 is a deficient number, since it is larger than the sum of its proper divisors (1).

225784531499 is an equidigital number, since it uses as much as digits as its factorization.

225784531499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 59.

The spelling of 225784531499 in words is "two hundred twenty-five billion, seven hundred eighty-four million, five hundred thirty-one thousand, four hundred ninety-nine".