9215225129 has 16 divisors (see below), whose sum is σ = 10135673856. Its totient is φ = 8308675200.

The previous prime is 9215225119. The next prime is 9215225161.

It is a happy number.

9215225129 is nontrivially palindromic in base 10.

9215225129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9215225129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9215225092 and 9215225101.

It is not an unprimeable number, because it can be changed into a prime (9215225119) 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, 2214719 + ... + 2218875.

It is an arithmetic number, because the mean of its divisors is an integer number (633479616).

Almost surely, 2^9215225129 is an apocalyptic number.

It is an amenable number.

9215225129 is a deficient number, since it is larger than the sum of its proper divisors (920448727).

9215225129 is a wasteful number, since it uses less digits than its factorization.

9215225129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776.

The product of its digits is 32400, while the sum is 38.

The square root of 9215225129 is about 95995.9641287070. The cubic root of 9215225129 is about 2096.5343539834.

The spelling of 9215225129 in words is "nine billion, two hundred fifteen million, two hundred twenty-five thousand, one hundred twenty-nine".