20425312407 has 16 divisors (see below), whose sum is σ = 27965592032. Its totient is φ = 13255557120.

The previous prime is 20425312399. The next prime is 20425312423. The reversal of 20425312407 is 70421352402.

It is not a de Polignac number, because 20425312407 - 2³ = 20425312399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425312487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557578 + ... + 593079.

It is an arithmetic number, because the mean of its divisors is an integer number (1747849502).

Almost surely, 2^20425312407 is an apocalyptic number.

20425312407 is a deficient number, since it is larger than the sum of its proper divisors (7540279625).

20425312407 is a wasteful number, since it uses less digits than its factorization.

20425312407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150818.

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

Adding to 20425312407 its reverse (70421352402), we get a palindrome (90846664809).

The spelling of 20425312407 in words is "twenty billion, four hundred twenty-five million, three hundred twelve thousand, four hundred seven".