21425141325 has 96 divisors (see below), whose sum is σ = 41614836480. Its totient is φ = 9524275200.

The previous prime is 21425141291. The next prime is 21425141357. The reversal of 21425141325 is 52314152412.

It is not a de Polignac number, because 21425141325 - 2¹⁰ = 21425140301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21425141292 and 21425141301.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 2846467 + ... + 2853983.

It is an arithmetic number, because the mean of its divisors is an integer number (433487880).

Almost surely, 2^21425141325 is an apocalyptic number.

21425141325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21425141325 is a deficient number, since it is larger than the sum of its proper divisors (20189695155).

21425141325 is a wasteful number, since it uses less digits than its factorization.

21425141325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7687 (or 7682 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

Adding to 21425141325 its reverse (52314152412), we get a palindrome (73739293737).

The spelling of 21425141325 in words is "twenty-one billion, four hundred twenty-five million, one hundred forty-one thousand, three hundred twenty-five".