655632625 has 24 divisors (see below), whose sum is σ = 869239800. Its totient is φ = 493625600.

The previous prime is 655632623. The next prime is 655632629. The reversal of 655632625 is 526236556.

It can be written as a sum of positive squares in 12 ways, for example, as 346294881 + 309337744 = 18609^2 + 17588^2 .

It is not a de Polignac number, because 655632625 - 2¹ = 655632623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655632623) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 27051 + ... + 45199.

It is an arithmetic number, because the mean of its divisors is an integer number (36218325).

Almost surely, 2^655632625 is an apocalyptic number.

It is an amenable number.

655632625 is a deficient number, since it is larger than the sum of its proper divisors (213607175).

655632625 is a wasteful number, since it uses less digits than its factorization.

655632625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18198 (or 18171 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

The square root of 655632625 is about 25605.3241533865. The cubic root of 655632625 is about 868.7340662675.

The spelling of 655632625 in words is "six hundred fifty-five million, six hundred thirty-two thousand, six hundred twenty-five".