71982857925 has 192 divisors, whose sum is σ = 155395768320. Its totient is φ = 32304096000.

The previous prime is 71982857923. The next prime is 71982857941. The reversal of 71982857925 is 52975828917.

71982857925 is a `hidden beast` number, since 7 + 19 + 8 + 28 + 579 + 25 = 666.

It is not a de Polignac number, because 71982857925 - 2¹ = 71982857923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71982857923) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5287227 + ... + 5300823.

It is an arithmetic number, because the mean of its divisors is an integer number (809352960).

Almost surely, 2^71982857925 is an apocalyptic number.

71982857925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71982857925 is an abundant number, since it is smaller than the sum of its proper divisors (83412910395).

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

71982857925 is a wasteful number, since it uses less digits than its factorization.

71982857925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13681 (or 13670 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 63.

The spelling of 71982857925 in words is "seventy-one billion, nine hundred eighty-two million, eight hundred fifty-seven thousand, nine hundred twenty-five".