1253657836225 has 12 divisors (see below), whose sum is σ = 1554947195760. Its totient is φ = 1002660798800.

The previous prime is 1253657836199. The next prime is 1253657836261. The reversal of 1253657836225 is 5226387563521.

It is a happy number.

It is not a de Polignac number, because 1253657836225 - 2³⁹ = 703902022337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6540391 + ... + 6729340.

It is an arithmetic number, because the mean of its divisors is an integer number (129578932980).

Almost surely, 2^{1253657836225} is an apocalyptic number.

It is an amenable number.

1253657836225 is a deficient number, since it is larger than the sum of its proper divisors (301289359535).

1253657836225 is a wasteful number, since it uses less digits than its factorization.

1253657836225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13273520 (or 13273515 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 55.

The spelling of 1253657836225 in words is "one trillion, two hundred fifty-three billion, six hundred fifty-seven million, eight hundred thirty-six thousand, two hundred twenty-five".