20413432425 has 12 divisors (see below), whose sum is σ = 33750208400. Its totient is φ = 10887163920.

The previous prime is 20413432381. The next prime is 20413432433. The reversal of 20413432425 is 52423431402.

It is not a de Polignac number, because 20413432425 - 2⁷ = 20413432297 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20413432392 and 20413432401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136089475 + ... + 136089624.

Almost surely, 2^20413432425 is an apocalyptic number.

20413432425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20413432425 is a deficient number, since it is larger than the sum of its proper divisors (13336775975).

20413432425 is a wasteful number, since it uses less digits than its factorization.

20413432425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272179112 (or 272179107 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20413432425 its reverse (52423431402), we get a palindrome (72836863827).

The spelling of 20413432425 in words is "twenty billion, four hundred thirteen million, four hundred thirty-two thousand, four hundred twenty-five".