255253532121 has 16 divisors (see below), whose sum is σ = 432175292800. Its totient is φ = 145859161104.

The previous prime is 255253532119. The next prime is 255253532123. The reversal of 255253532121 is 121235352552.

255253532121 is a `hidden beast` number, since 2 + 5 + 52 + 53 + 532 + 1 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (255253532119) and next prime (255253532123).

It is not a de Polignac number, because 255253532121 - 2¹ = 255253532119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255253532123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675273706 + ... + 675274083.

It is an arithmetic number, because the mean of its divisors is an integer number (27010955800).

Almost surely, 2^255253532121 is an apocalyptic number.

255253532121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

255253532121 is a deficient number, since it is larger than the sum of its proper divisors (176921760679).

255253532121 is a wasteful number, since it uses less digits than its factorization.

255253532121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350547805 (or 1350547799 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

Adding to 255253532121 its reverse (121235352552), we get a palindrome (376488884673).

The spelling of 255253532121 in words is "two hundred fifty-five billion, two hundred fifty-three million, five hundred thirty-two thousand, one hundred twenty-one".