67727725 has 12 divisors (see below), whose sum is σ = 90442996. Its totient is φ = 50014080.

The previous prime is 67727689. The next prime is 67727729. The reversal of 67727725 is 52772776.

It can be written as a sum of positive squares in 6 ways, for example, as 3759721 + 63968004 = 1939^2 + 7998^2 .

It is not a de Polignac number, because 67727725 - 2¹⁷ = 67596653 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 (67727729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103872 + ... + 104521.

Almost surely, 2^67727725 is an apocalyptic number.

67727725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67727725 is a deficient number, since it is larger than the sum of its proper divisors (22715271).

67727725 is a wasteful number, since it uses less digits than its factorization.

67727725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208416 (or 208411 counting only the distinct ones).

The product of its digits is 288120, while the sum is 43.

The square root of 67727725 is about 8229.6855954526. The cubic root of 67727725 is about 407.6200105711.

The spelling of 67727725 in words is "sixty-seven million, seven hundred twenty-seven thousand, seven hundred twenty-five".