255565632 has 224 divisors, whose sum is σ = 819302400. Its totient is φ = 68769792.

The previous prime is 255565631. The next prime is 255565633. The reversal of 255565632 is 236565552.

It is an interprime number because it is at equal distance from previous prime (255565631) and next prime (255565633).

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255565631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3079063 + ... + 3079145.

It is an arithmetic number, because the mean of its divisors is an integer number (3657600).

Almost surely, 2^255565632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255565632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409651200).

255565632 is an abundant number, since it is smaller than the sum of its proper divisors (563736768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255565632 is a wasteful number, since it uses less digits than its factorization.

255565632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 203 counting only the distinct ones).

The product of its digits is 270000, while the sum is 39.

The square root of 255565632 is about 15986.4202371888. The cubic root of 255565632 is about 634.6010944503.

The spelling of 255565632 in words is "two hundred fifty-five million, five hundred sixty-five thousand, six hundred thirty-two".