68911025 has 6 divisors (see below), whose sum is σ = 85449702. Its totient is φ = 55128800.

The previous prime is 68911001. The next prime is 68911033. The reversal of 68911025 is 52011986.

It can be written as a sum of positive squares in 3 ways, for example, as 23658496 + 45252529 = 4864^2 + 6727^2 .

It is not a de Polignac number, because 68911025 - 2⁸ = 68910769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68910982 and 68911000.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1378196 + ... + 1378245.

It is an arithmetic number, because the mean of its divisors is an integer number (14241617).

Almost surely, 2^68911025 is an apocalyptic number.

It is an amenable number.

68911025 is a deficient number, since it is larger than the sum of its proper divisors (16538677).

68911025 is a wasteful number, since it uses less digits than its factorization.

68911025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756451 (or 2756446 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 68911025 is about 8301.2664696418. The cubic root of 68911025 is about 409.9802191527.

The spelling of 68911025 in words is "sixty-eight million, nine hundred eleven thousand, twenty-five".