672727925 has 6 divisors (see below), whose sum is σ = 834182658. Its totient is φ = 538182320.

The previous prime is 672727919. The next prime is 672727981. The reversal of 672727925 is 529727276.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 71791729 + 600936196 = 8473^2 + 24514^2 .

It is not a de Polignac number, because 672727925 - 2¹² = 672723829 is a prime.

It is a super-2 number, since 2×672727925² = 905125722149611250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672727925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13454534 + ... + 13454583.

It is an arithmetic number, because the mean of its divisors is an integer number (139030443).

Almost surely, 2^672727925 is an apocalyptic number.

It is an amenable number.

672727925 is a deficient number, since it is larger than the sum of its proper divisors (161454733).

672727925 is a wasteful number, since it uses less digits than its factorization.

672727925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26909127 (or 26909122 counting only the distinct ones).

The product of its digits is 740880, while the sum is 47.

The square root of 672727925 is about 25936.9991517909. Note that the first 3 decimals coincide. The cubic root of 672727925 is about 876.2199798697.

The spelling of 672727925 in words is "six hundred seventy-two million, seven hundred twenty-seven thousand, nine hundred twenty-five".