68181825 has 12 divisors (see below), whose sum is σ = 112727408. Its totient is φ = 36363600.

The previous prime is 68181809. The next prime is 68181829. The reversal of 68181825 is 52818186.

It is not a de Polignac number, because 68181825 - 2⁴ = 68181809 is a prime.

It is a super-2 number, since 2×68181825² = 9297522520661250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68181829) 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, 454471 + ... + 454620.

Almost surely, 2^68181825 is an apocalyptic number.

It is an amenable number.

68181825 is a deficient number, since it is larger than the sum of its proper divisors (44545583).

68181825 is a wasteful number, since it uses less digits than its factorization.

68181825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909104 (or 909099 counting only the distinct ones).

The product of its digits is 30720, while the sum is 39.

The square root of 68181825 is about 8257.2286513091. The cubic root of 68181825 is about 408.5289839393.

It can be divided in two parts, 68181 and 825, that added together give a triangular number (69006 = T₃₇₁).

The spelling of 68181825 in words is "sixty-eight million, one hundred eighty-one thousand, eight hundred twenty-five".