725587669 has 2 divisors, whose sum is σ = 725587670. Its totient is φ = 725587668.

The previous prime is 725587663. The next prime is 725587673. The reversal of 725587669 is 966785527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582498225 + 143089444 = 24135^2 + 11962^2 .

It is a cyclic number.

It is not a de Polignac number, because 725587669 - 2¹⁷ = 725456597 is a prime.

It is a super-2 number, since 2×725587669² = 1052954930809707122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725587663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362793834 + 362793835.

It is an arithmetic number, because the mean of its divisors is an integer number (362793835).

Almost surely, 2^725587669 is an apocalyptic number.

It is an amenable number.

725587669 is a deficient number, since it is larger than the sum of its proper divisors (1).

725587669 is an equidigital number, since it uses as much as digits as its factorization.

725587669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 55.

The square root of 725587669 is about 26936.7345645310. The cubic root of 725587669 is about 898.5935518196.

The spelling of 725587669 in words is "seven hundred twenty-five million, five hundred eighty-seven thousand, six hundred sixty-nine".