725208949 has 2 divisors, whose sum is σ = 725208950. Its totient is φ = 725208948.

The previous prime is 725208941. The next prime is 725208973. The reversal of 725208949 is 949802527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717864849 + 7344100 = 26793^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 725208949 - 2³ = 725208941 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 725208899 and 725208908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725208941) 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, 362604474 + 362604475.

It is an arithmetic number, because the mean of its divisors is an integer number (362604475).

Almost surely, 2^725208949 is an apocalyptic number.

It is an amenable number.

725208949 is a deficient number, since it is larger than the sum of its proper divisors (1).

725208949 is an equidigital number, since it uses as much as digits as its factorization.

725208949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 725208949 is about 26929.7038416690. The cubic root of 725208949 is about 898.4371845094.

The spelling of 725208949 in words is "seven hundred twenty-five million, two hundred eight thousand, nine hundred forty-nine".