68525181 has 12 divisors (see below), whose sum is σ = 104803452. Its totient is φ = 42996096.

The previous prime is 68525161. The next prime is 68525189. The reversal of 68525181 is 18152586.

It can be written as a sum of positive squares in 2 ways, for example, as 37822500 + 30702681 = 6150^2 + 5541^2 .

It is not a de Polignac number, because 68525181 - 2⁶ = 68525117 is a prime.

It is a super-2 number, since 2×68525181² = 9391400862165522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68525189) 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, 223786 + ... + 224091.

It is an arithmetic number, because the mean of its divisors is an integer number (8733621).

Almost surely, 2^68525181 is an apocalyptic number.

It is an amenable number.

68525181 is a deficient number, since it is larger than the sum of its proper divisors (36278271).

68525181 is a wasteful number, since it uses less digits than its factorization.

68525181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447900 (or 447897 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 68525181 is about 8277.9937786882. The cubic root of 68525181 is about 409.2136046652.

The spelling of 68525181 in words is "sixty-eight million, five hundred twenty-five thousand, one hundred eighty-one".