80406525 has 24 divisors (see below), whose sum is σ = 133428960. Its totient is φ = 42725440.

The previous prime is 80406523. The next prime is 80406539. The reversal of 80406525 is 52560408.

It is not a de Polignac number, because 80406525 - 2¹ = 80406523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80406492 and 80406501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80406523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20146 + ... + 23804.

It is an arithmetic number, because the mean of its divisors is an integer number (5559540).

Almost surely, 2^80406525 is an apocalyptic number.

It is an amenable number.

80406525 is a deficient number, since it is larger than the sum of its proper divisors (53022435).

80406525 is a wasteful number, since it uses less digits than its factorization.

80406525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965 (or 3960 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 80406525 is about 8966.9685512998. The cubic root of 80406525 is about 431.6155648442.

The spelling of 80406525 in words is "eighty million, four hundred six thousand, five hundred twenty-five".