78277070325 has 12 divisors (see below), whose sum is σ = 129418089728. Its totient is φ = 41747770800.

The previous prime is 78277070323. The next prime is 78277070357. The reversal of 78277070325 is 52307077287.

It is a happy number.

It is not a de Polignac number, because 78277070325 - 2¹ = 78277070323 is a prime.

It is a super-2 number, since 2×78277070325² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78277070323) 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, 521847061 + ... + 521847210.

Almost surely, 2^78277070325 is an apocalyptic number.

78277070325 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78277070325 is a deficient number, since it is larger than the sum of its proper divisors (51141019403).

78277070325 is a wasteful number, since it uses less digits than its factorization.

78277070325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043694284 (or 1043694279 counting only the distinct ones).

The product of its (nonzero) digits is 1152480, while the sum is 48.

The spelling of 78277070325 in words is "seventy-eight billion, two hundred seventy-seven million, seventy thousand, three hundred twenty-five".