156225201 has 32 divisors (see below), whose sum is σ = 240622080. Its totient is φ = 89164800.

The previous prime is 156225191. The next prime is 156225221. The reversal of 156225201 is 102522651.

It is a happy number.

It is not a de Polignac number, because 156225201 - 2⁵ = 156225169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156225221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120366 + ... + 121656.

It is an arithmetic number, because the mean of its divisors is an integer number (7519440).

Almost surely, 2^156225201 is an apocalyptic number.

156225201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156225201 is a deficient number, since it is larger than the sum of its proper divisors (84396879).

156225201 is a wasteful number, since it uses less digits than its factorization.

156225201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 156225201 is about 12499.0080006375. The cubic root of 156225201 is about 538.5801761599.

Adding to 156225201 its reverse (102522651), we get a palindrome (258747852).

The spelling of 156225201 in words is "one hundred fifty-six million, two hundred twenty-five thousand, two hundred one".