25421003120000 has 80 divisors (see below), whose sum is σ = 63283998653700. Its totient is φ = 10168401216000.

The previous prime is 25421003119969. The next prime is 25421003120003. The reversal of 25421003120000 is 2130012452.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-4 number, since 4×25421003120000⁴ (a number of 55 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25421003120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 158801270 + ... + 158961269.

Almost surely, 2^{25421003120000} is an apocalyptic number.

25421003120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25421003120000 is an abundant number, since it is smaller than the sum of its proper divisors (37862995533700).

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

25421003120000 is an frugal number, since it uses more digits than its factorization.

25421003120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317762573 (or 317762546 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 25421003120000 its reverse (2130012452), we get a palindrome (25423133132452).

The spelling of 25421003120000 in words is "twenty-five trillion, four hundred twenty-one billion, three million, one hundred twenty thousand".