20005343625 has 32 divisors (see below), whose sum is σ = 33299285760. Its totient is φ = 10666185600.

The previous prime is 20005343593. The next prime is 20005343641. The reversal of 20005343625 is 52634350002.

It is not a de Polignac number, because 20005343625 - 2⁵ = 20005343593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20005343592 and 20005343601.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1616461 + ... + 1628789.

It is an arithmetic number, because the mean of its divisors is an integer number (1040602680).

Almost surely, 2^20005343625 is an apocalyptic number.

20005343625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20005343625 is a deficient number, since it is larger than the sum of its proper divisors (13293942135).

20005343625 is a wasteful number, since it uses less digits than its factorization.

20005343625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16674 (or 16664 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20005343625 its reverse (52634350002), we get a palindrome (72639693627).

The spelling of 20005343625 in words is "twenty billion, five million, three hundred forty-three thousand, six hundred twenty-five".