21150162330225 has 96 divisors (see below), whose sum is σ = 37076584756224. Its totient is φ = 10619824204800.

The previous prime is 21150162330217. The next prime is 21150162330301. The reversal of 21150162330225 is 52203326105112.

It is not a de Polignac number, because 21150162330225 - 2³ = 21150162330217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1294926159 + ... + 1294942491.

It is an arithmetic number, because the mean of its divisors is an integer number (386214424544).

Almost surely, 2^{21150162330225} is an apocalyptic number.

21150162330225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21150162330225 is a deficient number, since it is larger than the sum of its proper divisors (15926422425999).

21150162330225 is a wasteful number, since it uses less digits than its factorization.

21150162330225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31467 (or 31462 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 21150162330225 its reverse (52203326105112), we get a palindrome (73353488435337).

The spelling of 21150162330225 in words is "twenty-one trillion, one hundred fifty billion, one hundred sixty-two million, three hundred thirty thousand, two hundred twenty-five".