81114472625 has 16 divisors (see below), whose sum is σ = 101239587072. Its totient is φ = 64885985200.

The previous prime is 81114472603. The next prime is 81114472627. The reversal of 81114472625 is 52627441118.

It is not a de Polignac number, because 81114472625 - 2¹⁸ = 81114210481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81114472627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2033624 + ... + 2073126.

It is an arithmetic number, because the mean of its divisors is an integer number (6327474192).

Almost surely, 2^81114472625 is an apocalyptic number.

It is an amenable number.

81114472625 is a deficient number, since it is larger than the sum of its proper divisors (20125114447).

81114472625 is a wasteful number, since it uses less digits than its factorization.

81114472625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55945 (or 55935 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The spelling of 81114472625 in words is "eighty-one billion, one hundred fourteen million, four hundred seventy-two thousand, six hundred twenty-five".