1253504451525 has 48 divisors (see below), whose sum is σ = 2105428422528. Its totient is φ = 657934816000.

The previous prime is 1253504451509. The next prime is 1253504451553. The reversal of 1253504451525 is 5251544053521.

It is a happy number.

It is not a de Polignac number, because 1253504451525 - 2⁴ = 1253504451509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2754715 + ... + 3177335.

It is an arithmetic number, because the mean of its divisors is an integer number (43863092136).

Almost surely, 2^{1253504451525} is an apocalyptic number.

1253504451525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253504451525 is a deficient number, since it is larger than the sum of its proper divisors (851923971003).

1253504451525 is a wasteful number, since it uses less digits than its factorization.

1253504451525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423262 (or 423257 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 1253504451525 in words is "one trillion, two hundred fifty-three billion, five hundred four million, four hundred fifty-one thousand, five hundred twenty-five".