80971025 has 12 divisors (see below), whose sum is σ = 100548252. Its totient is φ = 64683840.

The previous prime is 80971019. The next prime is 80971031. The reversal of 80971025 is 52017908.

It is an interprime number because it is at equal distance from previous prime (80971019) and next prime (80971031).

It can be written as a sum of positive squares in 6 ways, for example, as 37503376 + 43467649 = 6124^2 + 6593^2 .

It is not a de Polignac number, because 80971025 - 2⁶ = 80970961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80970982 and 80971000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19427 + ... + 23223.

It is an arithmetic number, because the mean of its divisors is an integer number (8379021).

Almost surely, 2^80971025 is an apocalyptic number.

It is an amenable number.

80971025 is a deficient number, since it is larger than the sum of its proper divisors (19577227).

80971025 is a wasteful number, since it uses less digits than its factorization.

80971025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660 (or 4655 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 80971025 is about 8998.3901337962. The cubic root of 80971025 is about 432.6232733574.

The spelling of 80971025 in words is "eighty million, nine hundred seventy-one thousand, twenty-five".