20025212454 has 24 divisors (see below), whose sum is σ = 46725496272. Its totient is φ = 6161603760.

The previous prime is 20025212447. The next prime is 20025212489. The reversal of 20025212454 is 45421252002.

20025212454 is a `hidden beast` number, since 200 + 2 + 5 + 2 + 1 + 2 + 454 = 666.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 42788682 + ... + 42789149.

It is an arithmetic number, because the mean of its divisors is an integer number (1946895678).

Almost surely, 2^20025212454 is an apocalyptic number.

20025212454 is an abundant number, since it is smaller than the sum of its proper divisors (26700283818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20025212454 is a wasteful number, since it uses less digits than its factorization.

20025212454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85577852 (or 85577849 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 20025212454 its reverse (45421252002), we get a palindrome (65446464456).

The spelling of 20025212454 in words is "twenty billion, twenty-five million, two hundred twelve thousand, four hundred fifty-four".