156623725441 has 4 divisors (see below), whose sum is σ = 157075090992. Its totient is φ = 156172359892.

The previous prime is 156623725403. The next prime is 156623725463. The reversal of 156623725441 is 144527326651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144527326651 = 29 ⋅4983700919.

It is a cyclic number.

It is not a de Polignac number, because 156623725441 - 2¹¹ = 156623723393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156623725391 and 156623725400.

It is not an unprimeable number, because it can be changed into a prime (156623725541) 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, 225682255 + ... + 225682948.

It is an arithmetic number, because the mean of its divisors is an integer number (39268772748).

Almost surely, 2^156623725441 is an apocalyptic number.

It is an amenable number.

156623725441 is a deficient number, since it is larger than the sum of its proper divisors (451365551).

156623725441 is an equidigital number, since it uses as much as digits as its factorization.

156623725441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451365550.

The product of its digits is 1209600, while the sum is 46.

The spelling of 156623725441 in words is "one hundred fifty-six billion, six hundred twenty-three million, seven hundred twenty-five thousand, four hundred forty-one".