20225154 has 16 divisors (see below), whose sum is σ = 40495392. Its totient is φ = 6734208.

The previous prime is 20225147. The next prime is 20225159. The reversal of 20225154 is 45152202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20225154.

It is not an unprimeable number, because it can be changed into a prime (20225159) 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, 7762 + ... + 10034.

It is an arithmetic number, because the mean of its divisors is an integer number (2530962).

Almost surely, 2^20225154 is an apocalyptic number.

20225154 is an abundant number, since it is smaller than the sum of its proper divisors (20270238).

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

20225154 is a wasteful number, since it uses less digits than its factorization.

20225154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20225154 is about 4497.2384860045. The cubic root of 20225154 is about 272.4565663177.

Adding to 20225154 its reverse (45152202), we get a palindrome (65377356).

The spelling of 20225154 in words is "twenty million, two hundred twenty-five thousand, one hundred fifty-four".