20132440725 has 24 divisors (see below), whose sum is σ = 33428521152. Its totient is φ = 10691209600.

The previous prime is 20132440709. The next prime is 20132440733. The reversal of 20132440725 is 52704423102.

It is not a de Polignac number, because 20132440725 - 2⁴ = 20132440709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20132440692 and 20132440701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 558561 + ... + 593510.

It is an arithmetic number, because the mean of its divisors is an integer number (1392855048).

Almost surely, 2^20132440725 is an apocalyptic number.

20132440725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20132440725 is a deficient number, since it is larger than the sum of its proper divisors (13296080427).

20132440725 is a wasteful number, since it uses less digits than its factorization.

20132440725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152317 (or 1152312 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 20132440725 its reverse (52704423102), we get a palindrome (72836863827).

The spelling of 20132440725 in words is "twenty billion, one hundred thirty-two million, four hundred forty thousand, seven hundred twenty-five".