20140321525 has 12 divisors (see below), whose sum is σ = 25001202400. Its totient is φ = 16094706480.

The previous prime is 20140321511. The next prime is 20140321529. The reversal of 20140321525 is 52512304102.

It is a de Polignac number, because none of the positive numbers 2^k-20140321525 is a prime.

It is a super-2 number, since 2×20140321525² (a number of 21 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20140321525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140321529) 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 11 ways as a sum of consecutive naturals, for example, 415335 + ... + 461284.

Almost surely, 2^20140321525 is an apocalyptic number.

20140321525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20140321525 is a deficient number, since it is larger than the sum of its proper divisors (4860880875).

20140321525 is an equidigital number, since it uses as much as digits as its factorization.

20140321525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877548 (or 877543 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 20140321525 its reverse (52512304102), we get a palindrome (72652625627).

The spelling of 20140321525 in words is "twenty billion, one hundred forty million, three hundred twenty-one thousand, five hundred twenty-five".