251333552132 has 48 divisors (see below), whose sum is σ = 501724973232. Its totient is φ = 109134090240.

The previous prime is 251333552131. The next prime is 251333552137. The reversal of 251333552132 is 231255333152.

It can be written as a sum of positive squares in 8 ways, for example, as 7834728196 + 243498823936 = 88514^2 + 493456^2 .

It is a junction number, because it is equal to n+sod(n) for n = 251333552092 and 251333552101.

It is not an unprimeable number, because it can be changed into a prime (251333552131) 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, 2273582 + ... + 2381562.

It is an arithmetic number, because the mean of its divisors is an integer number (10452603609).

Almost surely, 2^251333552132 is an apocalyptic number.

It is an amenable number.

251333552132 is a deficient number, since it is larger than the sum of its proper divisors (250391421100).

251333552132 is a wasteful number, since it uses less digits than its factorization.

251333552132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110648 (or 110646 counting only the distinct ones).

The product of its digits is 81000, while the sum is 35.

Adding to 251333552132 its reverse (231255333152), we get a palindrome (482588885284).

The spelling of 251333552132 in words is "two hundred fifty-one billion, three hundred thirty-three million, five hundred fifty-two thousand, one hundred thirty-two".