251012132 has 24 divisors (see below), whose sum is σ = 505357440. Its totient is φ = 106862400.

The previous prime is 251012119. The next prime is 251012147. The reversal of 251012132 is 231210152.

It is a happy number.

It is a super-2 number, since 2×251012132² = 126014180822370848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 251012132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25457 + ... + 33912.

It is an arithmetic number, because the mean of its divisors is an integer number (21056560).

Almost surely, 2^251012132 is an apocalyptic number.

It is an amenable number.

251012132 is an abundant number, since it is smaller than the sum of its proper divisors (254345308).

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

251012132 is a wasteful number, since it uses less digits than its factorization.

251012132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59531 (or 59529 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 251012132 is about 15843.3623956533. The cubic root of 251012132 is about 630.8095178603.

Adding to 251012132 its reverse (231210152), we get a palindrome (482222284).

The spelling of 251012132 in words is "two hundred fifty-one million, twelve thousand, one hundred thirty-two".