725981143 has 2 divisors, whose sum is σ = 725981144. Its totient is φ = 725981142.

The previous prime is 725981119. The next prime is 725981147. The reversal of 725981143 is 341189527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725981143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725981096 and 725981105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725981147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362990571 + 362990572.

It is an arithmetic number, because the mean of its divisors is an integer number (362990572).

Almost surely, 2^725981143 is an apocalyptic number.

725981143 is a deficient number, since it is larger than the sum of its proper divisors (1).

725981143 is an equidigital number, since it uses as much as digits as its factorization.

725981143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 725981143 is about 26944.0372438876. The cubic root of 725981143 is about 898.7559531950.

The spelling of 725981143 in words is "seven hundred twenty-five million, nine hundred eighty-one thousand, one hundred forty-three".