68635725 has 12 divisors (see below), whose sum is σ = 113477856. Its totient is φ = 36605680.

The previous prime is 68635711. The next prime is 68635727. The reversal of 68635725 is 52753686.

It is not a de Polignac number, because 68635725 - 2⁴ = 68635709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68635727) 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, 457497 + ... + 457646.

It is an arithmetic number, because the mean of its divisors is an integer number (9456488).

Almost surely, 2^68635725 is an apocalyptic number.

It is an amenable number.

68635725 is a deficient number, since it is larger than the sum of its proper divisors (44842131).

68635725 is a wasteful number, since it uses less digits than its factorization.

68635725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915156 (or 915151 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 68635725 is about 8284.6680681847. The cubic root of 68635725 is about 409.4335326053.

The spelling of 68635725 in words is "sixty-eight million, six hundred thirty-five thousand, seven hundred twenty-five".