80405245 has 16 divisors (see below), whose sum is σ = 102312000. Its totient is φ = 60490368.

The previous prime is 80405243. The next prime is 80405251. The reversal of 80405245 is 54250408.

It is a cyclic number.

It is not a de Polignac number, because 80405245 - 2¹ = 80405243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80405243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10161 + ... + 16249.

It is an arithmetic number, because the mean of its divisors is an integer number (6394500).

Almost surely, 2^80405245 is an apocalyptic number.

It is an amenable number.

80405245 is a deficient number, since it is larger than the sum of its proper divisors (21906755).

80405245 is a wasteful number, since it uses less digits than its factorization.

80405245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 80405245 is about 8966.8971779540. The cubic root of 80405245 is about 431.6132745208.

The spelling of 80405245 in words is "eighty million, four hundred five thousand, two hundred forty-five".