68997825 has 60 divisors (see below), whose sum is σ = 137691708. Its totient is φ = 33955200.

The previous prime is 68997823. The next prime is 68997839. The reversal of 68997825 is 52879986.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1774224 + 67223601 = 1332^2 + 8199^2 .

It is not a de Polignac number, because 68997825 - 2¹ = 68997823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68997823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 25015 + ... + 27635.

Almost surely, 2^68997825 is an apocalyptic number.

68997825 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68997825 is a deficient number, since it is larger than the sum of its proper divisors (68693883).

68997825 is a wasteful number, since it uses less digits than its factorization.

68997825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656 (or 2642 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 68997825 is about 8306.4929422711. The cubic root of 68997825 is about 410.1522833086.

The spelling of 68997825 in words is "sixty-eight million, nine hundred ninety-seven thousand, eight hundred twenty-five".