78025507533 has 12 divisors (see below), whose sum is σ = 117603663840. Its totient is φ = 49755395976.

The previous prime is 78025507493. The next prime is 78025507543. The reversal of 78025507533 is 33570552087.

78025507533 is a `hidden beast` number, since 78 + 0 + 25 + 507 + 53 + 3 = 666.

It is not a de Polignac number, because 78025507533 - 2¹⁴ = 78025491149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78025507543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188467203 + ... + 188467616.

It is an arithmetic number, because the mean of its divisors is an integer number (9800305320).

Almost surely, 2^78025507533 is an apocalyptic number.

It is an amenable number.

78025507533 is a deficient number, since it is larger than the sum of its proper divisors (39578156307).

78025507533 is a wasteful number, since it uses less digits than its factorization.

78025507533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376934848 (or 376934845 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The spelling of 78025507533 in words is "seventy-eight billion, twenty-five million, five hundred seven thousand, five hundred thirty-three".