725161369 has 2 divisors, whose sum is σ = 725161370. Its totient is φ = 725161368.

The previous prime is 725161357. The next prime is 725161387. The reversal of 725161369 is 963161527.

725161369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623151369 + 102010000 = 24963^2 + 10100^2 .

It is a cyclic number.

It is not a de Polignac number, because 725161369 - 2¹⁵ = 725128601 is a prime.

It is a super-2 number, since 2×725161369² = 1051718022179908322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (725161309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362580684 + 362580685.

It is an arithmetic number, because the mean of its divisors is an integer number (362580685).

Almost surely, 2^725161369 is an apocalyptic number.

It is an amenable number.

725161369 is a deficient number, since it is larger than the sum of its proper divisors (1).

725161369 is an equidigital number, since it uses as much as digits as its factorization.

725161369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 725161369 is about 26928.8204160524. The cubic root of 725161369 is about 898.4175356546.

The spelling of 725161369 in words is "seven hundred twenty-five million, one hundred sixty-one thousand, three hundred sixty-nine".