156225655631 has 2 divisors, whose sum is σ = 156225655632. Its totient is φ = 156225655630.

The previous prime is 156225655549. The next prime is 156225655639. The reversal of 156225655631 is 136556522651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 156225655631 - 2²⁶ = 156158546767 is a prime.

It is a super-2 number, since 2×156225655631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156225655639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78112827815 + 78112827816.

It is an arithmetic number, because the mean of its divisors is an integer number (78112827816).

Almost surely, 2^156225655631 is an apocalyptic number.

156225655631 is a deficient number, since it is larger than the sum of its proper divisors (1).

156225655631 is an equidigital number, since it uses as much as digits as its factorization.

156225655631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620000, while the sum is 47.

The spelling of 156225655631 in words is "one hundred fifty-six billion, two hundred twenty-five million, six hundred fifty-five thousand, six hundred thirty-one".