78631029025 has 12 divisors (see below), whose sum is σ = 97508950000. Its totient is φ = 62900646480.

The previous prime is 78631029011. The next prime is 78631029073. The reversal of 78631029025 is 52092013687.

It is a de Polignac number, because none of the positive numbers 2^k-78631029025 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, 312226 + ... + 504724.

Almost surely, 2^78631029025 is an apocalyptic number.

It is an amenable number.

78631029025 is a deficient number, since it is larger than the sum of its proper divisors (18877920975).

78631029025 is a wasteful number, since it uses less digits than its factorization.

78631029025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208848 (or 208843 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 78631029025 in words is "seventy-eight billion, six hundred thirty-one million, twenty-nine thousand, twenty-five".