80725553 has 4 divisors (see below), whose sum is σ = 81930480. Its totient is φ = 79520628.

The previous prime is 80725549. The next prime is 80725591. The reversal of 80725553 is 35552708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80725553 - 2² = 80725549 is a prime.

It is a super-2 number, since 2×80725553² = 13033229814311618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80722553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602363 + ... + 602496.

It is an arithmetic number, because the mean of its divisors is an integer number (20482620).

Almost surely, 2^80725553 is an apocalyptic number.

It is an amenable number.

80725553 is a deficient number, since it is larger than the sum of its proper divisors (1204927).

80725553 is a wasteful number, since it uses less digits than its factorization.

80725553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204926.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 80725553 is about 8984.7400073680. The cubic root of 80725553 is about 432.1856501588.

The spelling of 80725553 in words is "eighty million, seven hundred twenty-five thousand, five hundred fifty-three".