21532423014225 has 192 divisors, whose sum is σ = 40832899027200. Its totient is φ = 11119500011520.

The previous prime is 21532423014187. The next prime is 21532423014227. The reversal of 21532423014225 is 52241032423512.

21532423014225 is a `hidden beast` number, since 2 + 1 + 5 + 3 + 2 + 423 + 0 + 1 + 4 + 225 = 666.

It is not a de Polignac number, because 21532423014225 - 2⁷ = 21532423014097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21532423014225.

It is not an unprimeable number, because it can be changed into a prime (21532423014227) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2317053679 + ... + 2317062971.

It is an arithmetic number, because the mean of its divisors is an integer number (212671349100).

Almost surely, 2^{21532423014225} is an apocalyptic number.

21532423014225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21532423014225 is a deficient number, since it is larger than the sum of its proper divisors (19300476012975).

21532423014225 is a wasteful number, since it uses less digits than its factorization.

21532423014225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241 (or 10230 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 21532423014225 its reverse (52241032423512), we get a palindrome (73773455437737).

The spelling of 21532423014225 in words is "twenty-one trillion, five hundred thirty-two billion, four hundred twenty-three million, fourteen thousand, two hundred twenty-five".