1291925625104 has 20 divisors (see below), whose sum is σ = 2503964098764. Its totient is φ = 645741341568.

The previous prime is 1291925625043. The next prime is 1291925625113. The reversal of 1291925625104 is 4015265291921.

It can be written as a sum of positive squares in 2 ways, for example, as 1166572806400 + 125352818704 = 1080080^2 + 354052^2 .

It is a super-2 number, since 2×1291925625104² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13793807 + ... + 13887150.

Almost surely, 2^{1291925625104} is an apocalyptic number.

It is an amenable number.

1291925625104 is a deficient number, since it is larger than the sum of its proper divisors (1212038473660).

1291925625104 is a wasteful number, since it uses less digits than its factorization.

1291925625104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27683882 (or 27683876 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 1291925625104 in words is "one trillion, two hundred ninety-one billion, nine hundred twenty-five million, six hundred twenty-five thousand, one hundred four".