68531725 has 6 divisors (see below), whose sum is σ = 84979370. Its totient is φ = 54825360.

The previous prime is 68531713. The next prime is 68531737. The reversal of 68531725 is 52713586.

It is an interprime number because it is at equal distance from previous prime (68531713) and next prime (68531737).

It can be written as a sum of positive squares in 3 ways, for example, as 19377604 + 49154121 = 4402^2 + 7011^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68531725 is a prime.

It is a congruent number.

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, 1370610 + ... + 1370659.

Almost surely, 2^68531725 is an apocalyptic number.

It is an amenable number.

68531725 is a deficient number, since it is larger than the sum of its proper divisors (16447645).

68531725 is a wasteful number, since it uses less digits than its factorization.

68531725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741279 (or 2741274 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 68531725 is about 8278.3890341056. The cubic root of 68531725 is about 409.2266305755.

The spelling of 68531725 in words is "sixty-eight million, five hundred thirty-one thousand, seven hundred twenty-five".