655132505 has 4 divisors (see below), whose sum is σ = 786159012. Its totient is φ = 524106000.

The previous prime is 655132459. The next prime is 655132507. The reversal of 655132505 is 505231556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 352650841 + 302481664 = 18779^2 + 17392^2 .

It is not a de Polignac number, because 655132505 - 2¹⁶ = 655066969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655132507) 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, 65513246 + ... + 65513255.

It is an arithmetic number, because the mean of its divisors is an integer number (196539753).

Almost surely, 2^655132505 is an apocalyptic number.

It is an amenable number.

655132505 is a deficient number, since it is larger than the sum of its proper divisors (131026507).

655132505 is a wasteful number, since it uses less digits than its factorization.

655132505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131026506.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 655132505 is about 25595.5563526171. The cubic root of 655132505 is about 868.5131184461.

The spelling of 655132505 in words is "six hundred fifty-five million, one hundred thirty-two thousand, five hundred five".