725155243 has 2 divisors, whose sum is σ = 725155244. Its totient is φ = 725155242.

The previous prime is 725155199. The next prime is 725155289. The reversal of 725155243 is 342551527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725155243 - 2¹³ = 725147051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725155199 and 725155208.

It is not a weakly prime, because it can be changed into another prime (725185243) 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, 362577621 + 362577622.

It is an arithmetic number, because the mean of its divisors is an integer number (362577622).

Almost surely, 2^725155243 is an apocalyptic number.

725155243 is a deficient number, since it is larger than the sum of its proper divisors (1).

725155243 is an equidigital number, since it uses as much as digits as its factorization.

725155243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 34.

The square root of 725155243 is about 26928.7066715058. The cubic root of 725155243 is about 898.4150057711.

The spelling of 725155243 in words is "seven hundred twenty-five million, one hundred fifty-five thousand, two hundred forty-three".