68745025 has 12 divisors (see below), whose sum is σ = 90258732. Its totient is φ = 51760640.

The previous prime is 68745023. The next prime is 68745041. The reversal of 68745025 is 52054786.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2745649 + 65999376 = 1657^2 + 8124^2 .

It is not a de Polignac number, because 68745025 - 2¹ = 68745023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68745023) 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, 80452 + ... + 81301.

It is an arithmetic number, because the mean of its divisors is an integer number (7521561).

Almost surely, 2^68745025 is an apocalyptic number.

It is an amenable number.

68745025 is a deficient number, since it is larger than the sum of its proper divisors (21513707).

68745025 is a wasteful number, since it uses less digits than its factorization.

68745025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161780 (or 161775 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 68745025 is about 8291.2619666731. The cubic root of 68745025 is about 409.6507535509.

The spelling of 68745025 in words is "sixty-eight million, seven hundred forty-five thousand, twenty-five".