78625522590 has 16 divisors (see below), whose sum is σ = 188701254288. Its totient is φ = 20966806016.

The previous prime is 78625522589. The next prime is 78625522603. The reversal of 78625522590 is 9522552687.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310425347 + ... + 1310425406.

It is an arithmetic number, because the mean of its divisors is an integer number (11793828393).

Almost surely, 2^78625522590 is an apocalyptic number.

78625522590 is an abundant number, since it is smaller than the sum of its proper divisors (110075731698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78625522590 is a wasteful number, since it uses less digits than its factorization.

78625522590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620850763.

The product of its (nonzero) digits is 3024000, while the sum is 51.

The spelling of 78625522590 in words is "seventy-eight billion, six hundred twenty-five million, five hundred twenty-two thousand, five hundred ninety".