1257507454012 has 12 divisors (see below), whose sum is σ = 2200847962320. Its totient is φ = 628693750496.

The previous prime is 1257507454003. The next prime is 1257507454051. The reversal of 1257507454012 is 2104547057521.

It is a super-2 number, since 2×1257507454012² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1257507454012.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14946937 + ... + 15030832.

It is an arithmetic number, because the mean of its divisors is an integer number (183403996860).

Almost surely, 2^{1257507454012} is an apocalyptic number.

It is an amenable number.

1257507454012 is a deficient number, since it is larger than the sum of its proper divisors (943340508308).

1257507454012 is a wasteful number, since it uses less digits than its factorization.

1257507454012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29988260 (or 29988258 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 43.

The spelling of 1257507454012 in words is "one trillion, two hundred fifty-seven billion, five hundred seven million, four hundred fifty-four thousand, twelve".