255661651526 has 8 divisors (see below), whose sum is σ = 406050858360. Its totient is φ = 120311365408.

The previous prime is 255661651499. The next prime is 255661651547. The reversal of 255661651526 is 625156166552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×255661651526² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3759730136 + ... + 3759730203.

It is an arithmetic number, because the mean of its divisors is an integer number (50756357295).

Almost surely, 2^255661651526 is an apocalyptic number.

255661651526 is a deficient number, since it is larger than the sum of its proper divisors (150389206834).

255661651526 is a wasteful number, since it uses less digits than its factorization.

255661651526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7519460358.

The product of its digits is 3240000, while the sum is 50.

The spelling of 255661651526 in words is "two hundred fifty-five billion, six hundred sixty-one million, six hundred fifty-one thousand, five hundred twenty-six".