725684419 has 2 divisors, whose sum is σ = 725684420. Its totient is φ = 725684418.

The previous prime is 725684413. The next prime is 725684473. The reversal of 725684419 is 914486527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725684419 - 2³ = 725684411 is a prime.

It is a super-2 number, since 2×725684419² = 1053235751958735122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (725684411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362842209 + 362842210.

It is an arithmetic number, because the mean of its divisors is an integer number (362842210).

Almost surely, 2^725684419 is an apocalyptic number.

725684419 is a deficient number, since it is larger than the sum of its proper divisors (1).

725684419 is an equidigital number, since it uses as much as digits as its factorization.

725684419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 725684419 is about 26938.5303793655. The cubic root of 725684419 is about 898.6334895905.

The spelling of 725684419 in words is "seven hundred twenty-five million, six hundred eighty-four thousand, four hundred nineteen".