1251345321532 has 12 divisors (see below), whose sum is σ = 2191330961176. Its totient is φ = 625250761200.

The previous prime is 1251345321431. The next prime is 1251345321557. The reversal of 1251345321532 is 2351235431521.

It is a happy number.

It is a super-2 number, since 2×1251345321532² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1251345321491 and 1251345321500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105468219 + ... + 105480082.

Almost surely, 2^{1251345321532} is an apocalyptic number.

It is an amenable number.

1251345321532 is a deficient number, since it is larger than the sum of its proper divisors (939985639644).

1251345321532 is a wasteful number, since it uses less digits than its factorization.

1251345321532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210949788 (or 210949786 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The spelling of 1251345321532 in words is "one trillion, two hundred fifty-one billion, three hundred forty-five million, three hundred twenty-one thousand, five hundred thirty-two".