1253503403525 has 24 divisors (see below), whose sum is σ = 1660875159240. Its totient is φ = 935155445760.

The previous prime is 1253503403513. The next prime is 1253503403533. The reversal of 1253503403525 is 5253043053521.

It can be written as a sum of positive squares in 12 ways, for example, as 406133445796 + 847369957729 = 637286^2 + 920527^2 .

It is not a de Polignac number, because 1253503403525 - 2¹² = 1253503399429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13483124 + ... + 13575773.

It is an arithmetic number, because the mean of its divisors is an integer number (69203131635).

Almost surely, 2^{1253503403525} is an apocalyptic number.

It is an amenable number.

1253503403525 is a deficient number, since it is larger than the sum of its proper divisors (407371755715).

1253503403525 is a wasteful number, since it uses less digits than its factorization.

1253503403525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27059033 (or 27059028 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 38.

The spelling of 1253503403525 in words is "one trillion, two hundred fifty-three billion, five hundred three million, four hundred three thousand, five hundred twenty-five".