1253204542405 has 16 divisors (see below), whose sum is σ = 1525629660480. Its totient is φ = 988139961088.

The previous prime is 1253204542399. The next prime is 1253204542453. The reversal of 1253204542405 is 5042454023521.

It is a cyclic number.

It is not a de Polignac number, because 1253204542405 - 2¹⁵ = 1253204509637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6094567 + ... + 6296836.

It is an arithmetic number, because the mean of its divisors is an integer number (95351853780).

Almost surely, 2^{1253204542405} is an apocalyptic number.

It is an amenable number.

1253204542405 is a deficient number, since it is larger than the sum of its proper divisors (272425118075).

1253204542405 is a wasteful number, since it uses less digits than its factorization.

1253204542405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12391700.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 1253204542405 its reverse (5042454023521), we get a palindrome (6295658565926).

The spelling of 1253204542405 in words is "one trillion, two hundred fifty-three billion, two hundred four million, five hundred forty-two thousand, four hundred five".