80525730 has 32 divisors (see below), whose sum is σ = 194431104. Its totient is φ = 21343616.

The previous prime is 80525707. The next prime is 80525741. The reversal of 80525730 is 3752508.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3027 + ... + 13046.

It is an arithmetic number, because the mean of its divisors is an integer number (6075972).

Almost surely, 2^80525730 is an apocalyptic number.

80525730 is an abundant number, since it is smaller than the sum of its proper divisors (113905374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80525730 is a wasteful number, since it uses less digits than its factorization.

80525730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16250.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 80525730 is about 8973.6129847459. The cubic root of 80525730 is about 431.8287537141.

The spelling of 80525730 in words is "eighty million, five hundred twenty-five thousand, seven hundred thirty".