81270624325 has 24 divisors (see below), whose sum is σ = 110107149120. Its totient is φ = 59014425600.

The previous prime is 81270624319. The next prime is 81270624397. The reversal of 81270624325 is 52342607218.

It is not a de Polignac number, because 81270624325 - 2¹⁵ = 81270591557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50460 + ... + 406309.

It is an arithmetic number, because the mean of its divisors is an integer number (4587797880).

Almost surely, 2^81270624325 is an apocalyptic number.

It is an amenable number.

81270624325 is a deficient number, since it is larger than the sum of its proper divisors (28836524795).

81270624325 is a wasteful number, since it uses less digits than its factorization.

81270624325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457437 (or 457432 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 81270624325 in words is "eighty-one billion, two hundred seventy million, six hundred twenty-four thousand, three hundred twenty-five".