68542825 has 12 divisors (see below), whose sum is σ = 91531468. Its totient is φ = 50616000.

The previous prime is 68542807. The next prime is 68542843. The reversal of 68542825 is 52824586.

68542825 is nontrivially palindromic in base 12.

It is an interprime number because it is at equal distance from previous prime (68542807) and next prime (68542843).

It can be written as a sum of positive squares in 6 ways, for example, as 7327849 + 61214976 = 2707^2 + 7824^2 .

It is not a de Polignac number, because 68542825 - 2⁷ = 68542697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105126 + ... + 105775.

Almost surely, 2^68542825 is an apocalyptic number.

68542825 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68542825 is a deficient number, since it is larger than the sum of its proper divisors (22988643).

68542825 is a wasteful number, since it uses less digits than its factorization.

68542825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210924 (or 210919 counting only the distinct ones).

The product of its digits is 153600, while the sum is 40.

The square root of 68542825 is about 8279.0594272538. The cubic root of 68542825 is about 409.2487233623.

The spelling of 68542825 in words is "sixty-eight million, five hundred forty-two thousand, eight hundred twenty-five".