728725125 has 32 divisors (see below), whose sum is σ = 1216200960. Its totient is φ = 387499200.

The previous prime is 728725087. The next prime is 728725133. The reversal of 728725125 is 521527827.

It is not a de Polignac number, because 728725125 - 2¹¹ = 728723077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131919 + ... + 137331.

It is an arithmetic number, because the mean of its divisors is an integer number (38006280).

Almost surely, 2^728725125 is an apocalyptic number.

728725125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

728725125 is a deficient number, since it is larger than the sum of its proper divisors (487475835).

728725125 is a wasteful number, since it uses less digits than its factorization.

728725125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790 (or 5780 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 728725125 is about 26994.9092422997. The cubic root of 728725125 is about 899.8868684958.

The spelling of 728725125 in words is "seven hundred twenty-eight million, seven hundred twenty-five thousand, one hundred twenty-five".