20425031354 has 64 divisors (see below), whose sum is σ = 39212087040. Its totient is φ = 7760793600.

The previous prime is 20425031353. The next prime is 20425031357. The reversal of 20425031354 is 45313052402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (20425031351) 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 31 ways as a sum of consecutive naturals, for example, 1008629 + ... + 1028679.

It is an arithmetic number, because the mean of its divisors is an integer number (612688860).

Almost surely, 2^20425031354 is an apocalyptic number.

20425031354 is a deficient number, since it is larger than the sum of its proper divisors (18787055686).

20425031354 is a wasteful number, since it uses less digits than its factorization.

20425031354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20295.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20425031354 its reverse (45313052402), we get a palindrome (65738083756).

The spelling of 20425031354 in words is "twenty billion, four hundred twenty-five million, thirty-one thousand, three hundred fifty-four".