1251026745212 has 6 divisors (see below), whose sum is σ = 2189296804128. Its totient is φ = 625513372604.

The previous prime is 1251026745193. The next prime is 1251026745217. The reversal of 1251026745212 is 2125476201521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251026745217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156378343148 + ... + 156378343155.

It is an arithmetic number, because the mean of its divisors is an integer number (364882800688).

Almost surely, 2^{1251026745212} is an apocalyptic number.

It is an amenable number.

1251026745212 is a deficient number, since it is larger than the sum of its proper divisors (938270058916).

1251026745212 is a wasteful number, since it uses less digits than its factorization.

1251026745212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312756686307 (or 312756686305 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 1251026745212 in words is "one trillion, two hundred fifty-one billion, twenty-six million, seven hundred forty-five thousand, two hundred twelve".