1253925865920 has 336 divisors, whose sum is σ = 4926883760640. Its totient is φ = 264564338688.

The previous prime is 1253925865909. The next prime is 1253925865963. The reversal of 1253925865920 is 295685293521.

It is a tau number, because it is divible by the number of its divisors (336).

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, 583621 + ... + 1687739.

Almost surely, 2^{1253925865920} is an apocalyptic number.

1253925865920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253925865920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2463441880320).

1253925865920 is an abundant number, since it is smaller than the sum of its proper divisors (3672957894720).

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

1253925865920 is a wasteful number, since it uses less digits than its factorization.

1253925865920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104172 (or 1104149 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 57.

The spelling of 1253925865920 in words is "one trillion, two hundred fifty-three billion, nine hundred twenty-five million, eight hundred sixty-five thousand, nine hundred twenty".