78148412748725 has 24 divisors (see below), whose sum is σ = 105714165482400. Its totient is φ = 56834845704000.

The previous prime is 78148412748691. The next prime is 78148412748767. The reversal of 78148412748725 is 52784721484187.

It is a de Polignac number, because none of the positive numbers 2^k-78148412748725 is a prime.

It is a super-2 number, since 2×78148412748725² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46681226 + ... + 48326324.

It is an arithmetic number, because the mean of its divisors is an integer number (4404756895100).

Almost surely, 2^{78148412748725} is an apocalyptic number.

It is an amenable number.

78148412748725 is a deficient number, since it is larger than the sum of its proper divisors (27565752733675).

78148412748725 is a wasteful number, since it uses less digits than its factorization.

78148412748725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817861 (or 1817856 counting only the distinct ones).

The product of its digits is 224788480, while the sum is 68.

The spelling of 78148412748725 in words is "seventy-eight trillion, one hundred forty-eight billion, four hundred twelve million, seven hundred forty-eight thousand, seven hundred twenty-five".