20225706251155 has 16 divisors (see below), whose sum is σ = 24315438739104. Its totient is φ = 16150839943680.

The previous prime is 20225706251147. The next prime is 20225706251171. The reversal of 20225706251155 is 55115260752202.

It is a happy number.

It is not a de Polignac number, because 20225706251155 - 2³ = 20225706251147 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 72719584 + ... + 72997186.

It is an arithmetic number, because the mean of its divisors is an integer number (1519714921194).

Almost surely, 2^{20225706251155} is an apocalyptic number.

20225706251155 is a deficient number, since it is larger than the sum of its proper divisors (4089732487949).

20225706251155 is a wasteful number, since it uses less digits than its factorization.

20225706251155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304326.

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 20225706251155 in words is "twenty trillion, two hundred twenty-five billion, seven hundred six million, two hundred fifty-one thousand, one hundred fifty-five".