22125145442515 has 16 divisors (see below), whose sum is σ = 27168022252800. Its totient is φ = 17288230048992.

The previous prime is 22125145442513. The next prime is 22125145442549. The reversal of 22125145442515 is 51524454152122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22125145442515 - 2¹ = 22125145442513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (22125145442513) 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, 14522056 + ... + 15973114.

It is an arithmetic number, because the mean of its divisors is an integer number (1698001390800).

Almost surely, 2^{22125145442515} is an apocalyptic number.

22125145442515 is a deficient number, since it is larger than the sum of its proper divisors (5042876810285).

22125145442515 is a wasteful number, since it uses less digits than its factorization.

22125145442515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522026.

The product of its digits is 640000, while the sum is 43.

Adding to 22125145442515 its reverse (51524454152122), we get a palindrome (73649599594637).

The spelling of 22125145442515 in words is "twenty-two trillion, one hundred twenty-five billion, one hundred forty-five million, four hundred forty-two thousand, five hundred fifteen".