15525122020000 has 120 divisors (see below), whose sum is σ = 38564950840416. Its totient is φ = 6149756256000.

The previous prime is 15525122019941. The next prime is 15525122020007. The reversal of 15525122020000 is 2022152551.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (15525122020007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1708234 + ... + 5828233.

Almost surely, 2^{15525122020000} is an apocalyptic number.

15525122020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15525122020000 is an abundant number, since it is smaller than the sum of its proper divisors (23039828820416).

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

15525122020000 is an equidigital number, since it uses as much as digits as its factorization.

15525122020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536600 (or 7536577 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 15525122020000 its reverse (2022152551), we get a palindrome (15527144172551).

The spelling of 15525122020000 in words is "fifteen trillion, five hundred twenty-five billion, one hundred twenty-two million, twenty thousand".