156325421 has 16 divisors (see below), whose sum is σ = 189563904. Its totient is φ = 125846784.

The previous prime is 156325417. The next prime is 156325423. The reversal of 156325421 is 124523651.

It is not a de Polignac number, because 156325421 - 2² = 156325417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156325423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71876 + ... + 74018.

It is an arithmetic number, because the mean of its divisors is an integer number (11847744).

Almost surely, 2^156325421 is an apocalyptic number.

It is an amenable number.

156325421 is a deficient number, since it is larger than the sum of its proper divisors (33238483).

156325421 is a wasteful number, since it uses less digits than its factorization.

156325421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780.

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

The square root of 156325421 is about 12503.0164760349. The cubic root of 156325421 is about 538.6953196981.

The spelling of 156325421 in words is "one hundred fifty-six million, three hundred twenty-five thousand, four hundred twenty-one".