725548919 has 2 divisors, whose sum is σ = 725548920. Its totient is φ = 725548918.

The previous prime is 725548913. The next prime is 725548927. The reversal of 725548919 is 919845527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725548919 - 2⁴ = 725548903 is a prime.

It is a super-2 number, since 2×725548919² = 1052842467724137122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725548913) 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, 362774459 + 362774460.

It is an arithmetic number, because the mean of its divisors is an integer number (362774460).

Almost surely, 2^725548919 is an apocalyptic number.

725548919 is a deficient number, since it is larger than the sum of its proper divisors (1).

725548919 is an equidigital number, since it uses as much as digits as its factorization.

725548919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 50.

The square root of 725548919 is about 26936.0152769484. The cubic root of 725548919 is about 898.5775550758.

The spelling of 725548919 in words is "seven hundred twenty-five million, five hundred forty-eight thousand, nine hundred nineteen".