20254515154 has 16 divisors (see below), whose sum is σ = 30710104920. Its totient is φ = 10017993600.

The previous prime is 20254515121. The next prime is 20254515181. The reversal of 20254515154 is 45151545202.

It can be written as a sum of positive squares in 4 ways, for example, as 20225106225 + 29408929 = 142215^2 + 5423^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183652 + ... + 272464.

Almost surely, 2^20254515154 is an apocalyptic number.

20254515154 is a deficient number, since it is larger than the sum of its proper divisors (10455589766).

20254515154 is a wasteful number, since it uses less digits than its factorization.

20254515154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90045.

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 20254515154 in words is "twenty billion, two hundred fifty-four million, five hundred fifteen thousand, one hundred fifty-four".