20023620425 has 24 divisors (see below), whose sum is σ = 26414550432. Its totient is φ = 15005088000.

The previous prime is 20023620403. The next prime is 20023620509. The reversal of 20023620425 is 52402632002.

It is not a de Polignac number, because 20023620425 - 2¹⁸ = 20023358281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20023620394 and 20023620403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21971 + ... + 201320.

It is an arithmetic number, because the mean of its divisors is an integer number (1100606268).

Almost surely, 2^20023620425 is an apocalyptic number.

20023620425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20023620425 is a deficient number, since it is larger than the sum of its proper divisors (6390930007).

20023620425 is a wasteful number, since it uses less digits than its factorization.

20023620425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223529 (or 223524 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The spelling of 20023620425 in words is "twenty billion, twenty-three million, six hundred twenty thousand, four hundred twenty-five".