1215025545423 has 32 divisors (see below), whose sum is σ = 1793522165760. Its totient is φ = 728618267520.

The previous prime is 1215025545407. The next prime is 1215025545449. The reversal of 1215025545423 is 3245455205121.

It is not a de Polignac number, because 1215025545423 - 2⁴ = 1215025545407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215025545473) 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 in 31 ways as a sum of consecutive naturals, for example, 6393336 + ... + 6580637.

It is an arithmetic number, because the mean of its divisors is an integer number (56047567680).

Almost surely, 2^{1215025545423} is an apocalyptic number.

1215025545423 is a deficient number, since it is larger than the sum of its proper divisors (578496620337).

1215025545423 is a wasteful number, since it uses less digits than its factorization.

1215025545423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12974079.

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 1215025545423 in words is "one trillion, two hundred fifteen billion, twenty-five million, five hundred forty-five thousand, four hundred twenty-three".