82971625 has 16 divisors (see below), whose sum is σ = 112963968. Its totient is φ = 60342000.

The previous prime is 82971619. The next prime is 82971643. The reversal of 82971625 is 52617928.

It is not a de Polignac number, because 82971625 - 2⁹ = 82971113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28797 + ... + 31546.

It is an arithmetic number, because the mean of its divisors is an integer number (7060248).

Almost surely, 2^82971625 is an apocalyptic number.

It is an amenable number.

82971625 is a deficient number, since it is larger than the sum of its proper divisors (29992343).

82971625 is a wasteful number, since it uses less digits than its factorization.

82971625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60369 (or 60359 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 82971625 is about 9108.8761655871. The cubic root of 82971625 is about 436.1573531444.

The spelling of 82971625 in words is "eighty-two million, nine hundred seventy-one thousand, six hundred twenty-five".