81025322 has 24 divisors (see below), whose sum is σ = 142720704. Its totient is φ = 34396152.

The previous prime is 81025319. The next prime is 81025327. The reversal of 81025322 is 22352018.

It is not an unprimeable number, because it can be changed into a prime (81025327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6623 + ... + 14349.

It is an arithmetic number, because the mean of its divisors is an integer number (5946696).

Almost surely, 2^81025322 is an apocalyptic number.

81025322 is a deficient number, since it is larger than the sum of its proper divisors (61695382).

81025322 is a wasteful number, since it uses less digits than its factorization.

81025322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850 (or 7843 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 81025322 is about 9001.4066678492. The cubic root of 81025322 is about 432.7199536090.

The spelling of 81025322 in words is "eighty-one million, twenty-five thousand, three hundred twenty-two".