256152423 has 4 divisors (see below), whose sum is σ = 341536568. Its totient is φ = 170768280.

The previous prime is 256152409. The next prime is 256152431. The reversal of 256152423 is 324251652.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 256152423 - 2¹² = 256148327 is a prime.

It is a super-2 number, since 2×256152423² = 131228127617541858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256152493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42692068 + ... + 42692073.

It is an arithmetic number, because the mean of its divisors is an integer number (85384142).

Almost surely, 2^256152423 is an apocalyptic number.

256152423 is a deficient number, since it is larger than the sum of its proper divisors (85384145).

256152423 is an equidigital number, since it uses as much as digits as its factorization.

256152423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85384144.

The product of its digits is 14400, while the sum is 30.

The square root of 256152423 is about 16004.7625099531. The cubic root of 256152423 is about 635.0864147591.

The spelling of 256152423 in words is "two hundred fifty-six million, one hundred fifty-two thousand, four hundred twenty-three".