1251212532 has 12 divisors (see below), whose sum is σ = 2919495936. Its totient is φ = 417070840.

The previous prime is 1251212519. The next prime is 1251212537. The reversal of 1251212532 is 2352121521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251212537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52133844 + ... + 52133867.

It is an arithmetic number, because the mean of its divisors is an integer number (243291328).

Almost surely, 2^1251212532 is an apocalyptic number.

1251212532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1251212532 is an abundant number, since it is smaller than the sum of its proper divisors (1668283404).

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

1251212532 is a wasteful number, since it uses less digits than its factorization.

1251212532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104267718 (or 104267716 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 1251212532 is about 35372.4826948859. The cubic root of 1251212532 is about 1077.5655419207.

The spelling of 1251212532 in words is "one billion, two hundred fifty-one million, two hundred twelve thousand, five hundred thirty-two".