725759987 has 2 divisors, whose sum is σ = 725759988. Its totient is φ = 725759986.

The previous prime is 725759959. The next prime is 725760001. The reversal of 725759987 is 789957527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725759987 is a prime.

It is a super-3 number, since 3×725759987³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725759927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362879993 + 362879994.

It is an arithmetic number, because the mean of its divisors is an integer number (362879994).

Almost surely, 2^725759987 is an apocalyptic number.

725759987 is a deficient number, since it is larger than the sum of its proper divisors (1).

725759987 is an equidigital number, since it uses as much as digits as its factorization.

725759987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11113200, while the sum is 59.

The square root of 725759987 is about 26939.9329434949. The cubic root of 725759987 is about 898.6646811005.

The spelling of 725759987 in words is "seven hundred twenty-five million, seven hundred fifty-nine thousand, nine hundred eighty-seven".