78180525365425 has 72 divisors (see below), whose sum is σ = 113240868683040. Its totient is φ = 53386411680000.

The previous prime is 78180525365417. The next prime is 78180525365431. The reversal of 78180525365425 is 52456352508187.

It is not a de Polignac number, because 78180525365425 - 2³ = 78180525365417 is a prime.

It is a super-3 number, since 3×78180525365425³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2019783922 + ... + 2019822628.

It is an arithmetic number, because the mean of its divisors is an integer number (1572789842820).

Almost surely, 2^{78180525365425} is an apocalyptic number.

It is an amenable number.

78180525365425 is a deficient number, since it is larger than the sum of its proper divisors (35060343317615).

78180525365425 is a wasteful number, since it uses less digits than its factorization.

78180525365425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45551 (or 45539 counting only the distinct ones).

The product of its (nonzero) digits is 80640000, while the sum is 61.

The spelling of 78180525365425 in words is "seventy-eight trillion, one hundred eighty billion, five hundred twenty-five million, three hundred sixty-five thousand, four hundred twenty-five".