255655551725 has 36 divisors (see below), whose sum is σ = 363089823264. Its totient is φ = 174925527840.

The previous prime is 255655551709. The next prime is 255655551727. The reversal of 255655551725 is 527155556552.

It is not a de Polignac number, because 255655551725 - 2⁴ = 255655551709 is a prime.

It is a super-2 number, since 2×255655551725² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255655551727) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43572242 + ... + 43578108.

It is an arithmetic number, because the mean of its divisors is an integer number (10085828424).

Almost surely, 2^255655551725 is an apocalyptic number.

255655551725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255655551725 is a deficient number, since it is larger than the sum of its proper divisors (107434271539).

255655551725 is an frugal number, since it uses more digits than its factorization.

255655551725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882 (or 6378 counting only the distinct ones).

The product of its digits is 13125000, while the sum is 53.

The spelling of 255655551725 in words is "two hundred fifty-five billion, six hundred fifty-five million, five hundred fifty-one thousand, seven hundred twenty-five".