725554673 has 2 divisors, whose sum is σ = 725554674. Its totient is φ = 725554672.

The previous prime is 725554637. The next prime is 725554681. The reversal of 725554673 is 376455527.

Together with previous prime (725554637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 580424464 + 145130209 = 24092^2 + 12047^2 .

It is a cyclic number.

It is not a de Polignac number, because 725554673 - 2¹⁰ = 725553649 is a prime.

It is not a weakly prime, because it can be changed into another prime (725554693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362777336 + 362777337.

It is an arithmetic number, because the mean of its divisors is an integer number (362777337).

Almost surely, 2^725554673 is an apocalyptic number.

It is an amenable number.

725554673 is a deficient number, since it is larger than the sum of its proper divisors (1).

725554673 is an equidigital number, since it uses as much as digits as its factorization.

725554673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 44.

The square root of 725554673 is about 26936.1220854079. The cubic root of 725554673 is about 898.5799304735.

The spelling of 725554673 in words is "seven hundred twenty-five million, five hundred fifty-four thousand, six hundred seventy-three".