1572522172452 has 432 divisors, whose sum is σ = 5227269046272. Its totient is φ = 389687760000.

The previous prime is 1572522172387. The next prime is 1572522172499. The reversal of 1572522172452 is 2542712252751.

1572522172452 is a `hidden beast` number, since 1 + 5 + 7 + 2 + 5 + 22 + 172 + 452 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1572522172398 and 1572522172407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 67101177 + ... + 67124607.

Almost surely, 2^{1572522172452} is an apocalyptic number.

1572522172452 is a gapful number since it is divisible by the number (12) 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 1572522172452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613634523136).

1572522172452 is an abundant number, since it is smaller than the sum of its proper divisors (3654746873820).

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

1572522172452 is a wasteful number, since it uses less digits than its factorization.

1572522172452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23572 (or 23556 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The spelling of 1572522172452 in words is "one trillion, five hundred seventy-two billion, five hundred twenty-two million, one hundred seventy-two thousand, four hundred fifty-two".