68158025 has 12 divisors (see below), whose sum is σ = 91017612. Its totient is φ = 50331840.

The previous prime is 68158019. The next prime is 68158061. The reversal of 68158025 is 52085186.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10883401 + 57274624 = 3299^2 + 7568^2 .

It is not a de Polignac number, because 68158025 - 2¹⁸ = 67895881 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 104534 + ... + 105183.

It is an arithmetic number, because the mean of its divisors is an integer number (7584801).

Almost surely, 2^68158025 is an apocalyptic number.

68158025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68158025 is a deficient number, since it is larger than the sum of its proper divisors (22859587).

68158025 is a wasteful number, since it uses less digits than its factorization.

68158025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209740 (or 209735 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 68158025 is about 8255.7873640253. The cubic root of 68158025 is about 408.4814437951.

The spelling of 68158025 in words is "sixty-eight million, one hundred fifty-eight thousand, twenty-five".