68738638025 has 12 divisors (see below), whose sum is σ = 85608127500. Its totient is φ = 54750770880.

The previous prime is 68738637997. The next prime is 68738638043. The reversal of 68738638025 is 52083683786.

It can be written as a sum of positive squares in 6 ways, for example, as 1173473536 + 67565164489 = 34256^2 + 259933^2 .

It is not a de Polignac number, because 68738638025 - 2¹⁴ = 68738621641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5997650 + ... + 6009099.

It is an arithmetic number, because the mean of its divisors is an integer number (7134010625).

Almost surely, 2^68738638025 is an apocalyptic number.

It is an amenable number.

68738638025 is a deficient number, since it is larger than the sum of its proper divisors (16869489475).

68738638025 is a wasteful number, since it uses less digits than its factorization.

68738638025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12006988 (or 12006983 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 68738638025 in words is "sixty-eight billion, seven hundred thirty-eight million, six hundred thirty-eight thousand, twenty-five".