20533034425 has 6 divisors (see below), whose sum is σ = 25460962718. Its totient is φ = 16426427520.

The previous prime is 20533034413. The next prime is 20533034441. The reversal of 20533034425 is 52443033502.

It can be written as a sum of positive squares in 3 ways, for example, as 603783184 + 19929251241 = 24572^2 + 141171^2 .

It is not a de Polignac number, because 20533034425 - 2⁷ = 20533034297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 410660664 + ... + 410660713.

Almost surely, 2^20533034425 is an apocalyptic number.

20533034425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20533034425 is a deficient number, since it is larger than the sum of its proper divisors (4927928293).

20533034425 is an equidigital number, since it uses as much as digits as its factorization.

20533034425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821321387 (or 821321382 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 31.

Adding to 20533034425 its reverse (52443033502), we get a palindrome (72976067927).

The spelling of 20533034425 in words is "twenty billion, five hundred thirty-three million, thirty-four thousand, four hundred twenty-five".