20525401344 has 72 divisors (see below), whose sum is σ = 62431445440. Its totient is φ = 5864398848.

The previous prime is 20525401331. The next prime is 20525401361. The reversal of 20525401344 is 44310452502.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1903609 + ... + 1914360.

Almost surely, 2^20525401344 is an apocalyptic number.

20525401344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20525401344 is an abundant number, since it is smaller than the sum of its proper divisors (41906044096).

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

20525401344 is an equidigital number, since it uses as much as digits as its factorization.

20525401344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817995 (or 3817981 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20525401344 its reverse (44310452502), we get a palindrome (64835853846).

The spelling of 20525401344 in words is "twenty billion, five hundred twenty-five million, four hundred one thousand, three hundred forty-four".