20625505435 has 16 divisors (see below), whose sum is σ = 25553912832. Its totient is φ = 15965071200.

The previous prime is 20625505421. The next prime is 20625505447. The reversal of 20625505435 is 53450552602.

It is not a de Polignac number, because 20625505435 - 2¹¹ = 20625503387 is a prime.

It is a super-2 number, since 2×20625505435² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20625505394 and 20625505403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123480 + ... + 1141690.

It is an arithmetic number, because the mean of its divisors is an integer number (1597119552).

Almost surely, 2^20625505435 is an apocalyptic number.

20625505435 is a deficient number, since it is larger than the sum of its proper divisors (4928407397).

20625505435 is a wasteful number, since it uses less digits than its factorization.

20625505435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25554.

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 20625505435 in words is "twenty billion, six hundred twenty-five million, five hundred five thousand, four hundred thirty-five".