71049543225 has 48 divisors (see below), whose sum is σ = 125888883072. Its totient is φ = 35265922560.

The previous prime is 71049543199. The next prime is 71049543247. The reversal of 71049543225 is 52234594017.

It is a happy number.

It is not a de Polignac number, because 71049543225 - 2⁵ = 71049543193 is a prime.

It is a super-2 number, since 2×71049543225² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 492772 + ... + 620421.

It is an arithmetic number, because the mean of its divisors is an integer number (2622685064).

Almost surely, 2^71049543225 is an apocalyptic number.

71049543225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71049543225 is a deficient number, since it is larger than the sum of its proper divisors (54839339847).

71049543225 is a wasteful number, since it uses less digits than its factorization.

71049543225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113266 (or 1113261 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 71049543225 in words is "seventy-one billion, forty-nine million, five hundred forty-three thousand, two hundred twenty-five".