725161503331 has 2 divisors, whose sum is σ = 725161503332. Its totient is φ = 725161503330.

The previous prime is 725161503263. The next prime is 725161503373. The reversal of 725161503331 is 133305161527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725161503331 - 2⁷ = 725161503203 is a prime.

It is a super-2 number, since 2×725161503331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (725161503431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362580751665 + 362580751666.

It is an arithmetic number, because the mean of its divisors is an integer number (362580751666).

Almost surely, 2^725161503331 is an apocalyptic number.

725161503331 is a deficient number, since it is larger than the sum of its proper divisors (1).

725161503331 is an equidigital number, since it uses as much as digits as its factorization.

725161503331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

Adding to 725161503331 its reverse (133305161527), we get a palindrome (858466664858).

The spelling of 725161503331 in words is "seven hundred twenty-five billion, one hundred sixty-one million, five hundred three thousand, three hundred thirty-one".