22505420154 has 32 divisors (see below), whose sum is σ = 52284260736. Its totient is φ = 6324707520.

The previous prime is 22505420153. The next prime is 22505420251. The reversal of 22505420154 is 45102450522.

It is a super-3 number, since 3×22505420154³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22505420153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4389597 + ... + 4394720.

It is an arithmetic number, because the mean of its divisors is an integer number (1633883148).

Almost surely, 2^22505420154 is an apocalyptic number.

22505420154 is an abundant number, since it is smaller than the sum of its proper divisors (29778840582).

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

22505420154 is a wasteful number, since it uses less digits than its factorization.

22505420154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8784390.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 22505420154 its reverse (45102450522), we get a palindrome (67607870676).

The spelling of 22505420154 in words is "twenty-two billion, five hundred five million, four hundred twenty thousand, one hundred fifty-four".