20205011254 has 16 divisors (see below), whose sum is σ = 31469180400. Its totient is φ = 9717875104.

The previous prime is 20205011249. The next prime is 20205011257. The reversal of 20205011254 is 45211050202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20205011257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631912 + ... + 663115.

It is an arithmetic number, because the mean of its divisors is an integer number (1966823775).

Almost surely, 2^20205011254 is an apocalyptic number.

20205011254 is a deficient number, since it is larger than the sum of its proper divisors (11264169146).

20205011254 is a wasteful number, since it uses less digits than its factorization.

20205011254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295327.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 20205011254 its reverse (45211050202), we get a palindrome (65416061456).

The spelling of 20205011254 in words is "twenty billion, two hundred five million, eleven thousand, two hundred fifty-four".