80577725 has 6 divisors (see below), whose sum is σ = 99916410. Its totient is φ = 64462160.

The previous prime is 80577719. The next prime is 80577737. The reversal of 80577725 is 52777508.

It can be written as a sum of positive squares in 3 ways, for example, as 12581209 + 67996516 = 3547^2 + 8246^2 .

It is not a de Polignac number, because 80577725 - 2⁶ = 80577661 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1611530 + ... + 1611579.

It is an arithmetic number, because the mean of its divisors is an integer number (16652735).

Almost surely, 2^80577725 is an apocalyptic number.

It is an amenable number.

80577725 is a deficient number, since it is larger than the sum of its proper divisors (19338685).

80577725 is a wasteful number, since it uses less digits than its factorization.

80577725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223119 (or 3223114 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 80577725 is about 8976.5096223421. The cubic root of 80577725 is about 431.9216768300.

The spelling of 80577725 in words is "eighty million, five hundred seventy-seven thousand, seven hundred twenty-five".