725710019 has 2 divisors, whose sum is σ = 725710020. Its totient is φ = 725710018.

The previous prime is 725709983. The next prime is 725710021. The reversal of 725710019 is 910017527.

It is a strong prime.

It is an emirp because it is prime and its reverse (910017527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725710019 - 2¹² = 725705923 is a prime.

It is a super-2 number, since 2×725710019² = 1053310063353960722, which contains 22 as substring.

Together with 725710021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725710519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362855009 + 362855010.

It is an arithmetic number, because the mean of its divisors is an integer number (362855010).

Almost surely, 2^725710019 is an apocalyptic number.

725710019 is a deficient number, since it is larger than the sum of its proper divisors (1).

725710019 is an equidigital number, since it uses as much as digits as its factorization.

725710019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 725710019 is about 26939.0055310139. The cubic root of 725710019 is about 898.6440565101.

The spelling of 725710019 in words is "seven hundred twenty-five million, seven hundred ten thousand, nineteen".