71444015625 has 28 divisors (see below), whose sum is σ = 119071913360. Its totient is φ = 38103450000.

The previous prime is 71444015609. The next prime is 71444015681. The reversal of 71444015625 is 52651044417.

It is not a de Polignac number, because 71444015625 - 2⁴ = 71444015609 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 715195 + ... + 808944.

Almost surely, 2^71444015625 is an apocalyptic number.

71444015625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71444015625 is a deficient number, since it is larger than the sum of its proper divisors (47627897735).

71444015625 is an frugal number, since it uses more digits than its factorization.

71444015625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524172 (or 1524147 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 71444015625 in words is "seventy-one billion, four hundred forty-four million, fifteen thousand, six hundred twenty-five".