725554549 has 2 divisors, whose sum is σ = 725554550. Its totient is φ = 725554548.

The previous prime is 725554507. The next prime is 725554579. The reversal of 725554549 is 945455527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 633528900 + 92025649 = 25170^2 + 9593^2 .

It is a cyclic number.

It is not a de Polignac number, because 725554549 - 2¹¹ = 725552501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725554499 and 725554508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725554579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362777274 + 362777275.

It is an arithmetic number, because the mean of its divisors is an integer number (362777275).

Almost surely, 2^725554549 is an apocalyptic number.

It is an amenable number.

725554549 is a deficient number, since it is larger than the sum of its proper divisors (1).

725554549 is an equidigital number, since it uses as much as digits as its factorization.

725554549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260000, while the sum is 46.

The square root of 725554549 is about 26936.1197836659. The cubic root of 725554549 is about 898.5798792833.

The spelling of 725554549 in words is "seven hundred twenty-five million, five hundred fifty-four thousand, five hundred forty-nine".