20013025492 has 24 divisors (see below), whose sum is σ = 35268287040. Its totient is φ = 9936494400.

The previous prime is 20013025469. The next prime is 20013025499. The reversal of 20013025492 is 29452031002.

It is a self number, because there is not a number n which added to its sum of digits gives 20013025492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013025499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665992 + ... + 695392.

It is an arithmetic number, because the mean of its divisors is an integer number (1469511960).

Almost surely, 2^20013025492 is an apocalyptic number.

It is an amenable number.

20013025492 is a deficient number, since it is larger than the sum of its proper divisors (15255261548).

20013025492 is a wasteful number, since it uses less digits than its factorization.

20013025492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30591 (or 30589 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 20013025492 its reverse (29452031002), we get a palindrome (49465056494).

The spelling of 20013025492 in words is "twenty billion, thirteen million, twenty-five thousand, four hundred ninety-two".