20455326540425 has 72 divisors (see below), whose sum is σ = 29735958878016. Its totient is φ = 13673545920000.

The previous prime is 20455326540401. The next prime is 20455326540437. The reversal of 20455326540425 is 52404562355402.

It is not a de Polignac number, because 20455326540425 - 2¹⁸ = 20455326278281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20455326540425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 379752995 + ... + 379806855.

Almost surely, 2^{20455326540425} is an apocalyptic number.

20455326540425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20455326540425 is a deficient number, since it is larger than the sum of its proper divisors (9280632337591).

20455326540425 is a wasteful number, since it uses less digits than its factorization.

20455326540425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55251 (or 55205 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 47.

Adding to 20455326540425 its reverse (52404562355402), we get a palindrome (72859888895827).

The spelling of 20455326540425 in words is "twenty trillion, four hundred fifty-five billion, three hundred twenty-six million, five hundred forty thousand, four hundred twenty-five".