255620026552 has 128 divisors (see below), whose sum is σ = 559612800000. Its totient is φ = 108243648000.

The previous prime is 255620026549. The next prime is 255620026589.

It is a happy number.

255620026552 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×255620026552³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25156849 + ... + 25167007.

It is an arithmetic number, because the mean of its divisors is an integer number (4371975000).

Almost surely, 2^255620026552 is an apocalyptic number.

255620026552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255620026552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279806400000).

255620026552 is an abundant number, since it is smaller than the sum of its proper divisors (303992773448).

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

255620026552 is a wasteful number, since it uses less digits than its factorization.

255620026552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10445 (or 10441 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 255620026552 in words is "two hundred fifty-five billion, six hundred twenty million, twenty-six thousand, five hundred fifty-two".