156222605 has 32 divisors (see below), whose sum is σ = 247484160. Its totient is φ = 91653120.

The previous prime is 156222593. The next prime is 156222629. The reversal of 156222605 is 506222651.

156222605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 156222605 - 2¹⁴ = 156206221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5390 + ... + 18479.

It is an arithmetic number, because the mean of its divisors is an integer number (7733880).

Almost surely, 2^156222605 is an apocalyptic number.

It is an amenable number.

156222605 is a deficient number, since it is larger than the sum of its proper divisors (91261555).

156222605 is a wasteful number, since it uses less digits than its factorization.

156222605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23909.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 156222605 is about 12498.9041519647. The cubic root of 156222605 is about 538.5771929410.

The spelling of 156222605 in words is "one hundred fifty-six million, two hundred twenty-two thousand, six hundred five".