673400725 has 12 divisors (see below), whose sum is σ = 852784704. Its totient is φ = 527257520.

The previous prime is 673400723. The next prime is 673400731. The reversal of 673400725 is 527004376.

It is a happy number.

It is not a de Polignac number, because 673400725 - 2¹ = 673400723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673400723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285379 + ... + 287728.

It is an arithmetic number, because the mean of its divisors is an integer number (71065392).

Almost surely, 2^673400725 is an apocalyptic number.

It is an amenable number.

673400725 is a deficient number, since it is larger than the sum of its proper divisors (179383979).

673400725 is a wasteful number, since it uses less digits than its factorization.

673400725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573164 (or 573159 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 673400725 is about 25949.9657995921. The cubic root of 673400725 is about 876.5119871640.

The spelling of 673400725 in words is "six hundred seventy-three million, four hundred thousand, seven hundred twenty-five".