68142725 has 24 divisors (see below), whose sum is σ = 96922368. Its totient is φ = 46555200.

The previous prime is 68142713. The next prime is 68142731. The reversal of 68142725 is 52724186.

It is not a de Polignac number, because 68142725 - 2⁴ = 68142709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63695 + ... + 64755.

It is an arithmetic number, because the mean of its divisors is an integer number (4038432).

Almost surely, 2^68142725 is an apocalyptic number.

It is an amenable number.

68142725 is a deficient number, since it is larger than the sum of its proper divisors (28779643).

68142725 is a wasteful number, since it uses less digits than its factorization.

68142725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1440 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 68142725 is about 8254.8606893151. The cubic root of 68142725 is about 408.4508764296.

The spelling of 68142725 in words is "sixty-eight million, one hundred forty-two thousand, seven hundred twenty-five".