255642040332 has 240 divisors, whose sum is σ = 805387770880. Its totient is φ = 69074208000.

The previous prime is 255642040331. The next prime is 255642040349. The reversal of 255642040332 is 233040246552.

255642040332 is a `hidden beast` number, since 2 + 5 + 5 + 642 + 0 + 4 + 0 + 3 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (255642040331) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 25893357 + ... + 25903227.

Almost surely, 2^255642040332 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 255642040332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402693885440).

255642040332 is an abundant number, since it is smaller than the sum of its proper divisors (549745730548).

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

255642040332 is a wasteful number, since it uses less digits than its factorization.

255642040332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10514 (or 10503 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 255642040332 its reverse (233040246552), we get a palindrome (488682286884).

The spelling of 255642040332 in words is "two hundred fifty-five billion, six hundred forty-two million, forty thousand, three hundred thirty-two".