20206625403 has 8 divisors (see below), whose sum is σ = 27568729408. Its totient is φ = 13157802504.

The previous prime is 20206625393. The next prime is 20206625429. The reversal of 20206625403 is 30452660202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20206625403 - 2⁵ = 20206625371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20206625503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 78320125 + ... + 78320382.

It is an arithmetic number, because the mean of its divisors is an integer number (3446091176).

Almost surely, 2^20206625403 is an apocalyptic number.

20206625403 is a deficient number, since it is larger than the sum of its proper divisors (7362104005).

20206625403 is a wasteful number, since it uses less digits than its factorization.

20206625403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156640553.

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 20206625403 in words is "twenty billion, two hundred six million, six hundred twenty-five thousand, four hundred three".