1253206502172 has 36 divisors (see below), whose sum is σ = 3285154495896. Its totient is φ = 417735500400.

The previous prime is 1253206502161. The next prime is 1253206502173. The reversal of 1253206502172 is 2712056023521.

1253206502172 is a `hidden beast` number, since 1 + 2 + 532 + 0 + 6 + 50 + 2 + 1 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253206502173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644652579 + ... + 644654522.

Almost surely, 2^{1253206502172} is an apocalyptic number.

1253206502172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1253206502172 is an abundant number, since it is smaller than the sum of its proper divisors (2031947993724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253206502172 is a wasteful number, since it uses less digits than its factorization.

1253206502172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289307120 (or 1289307106 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 1253206502172 in words is "one trillion, two hundred fifty-three billion, two hundred six million, five hundred two thousand, one hundred seventy-two".