25423156747 has 4 divisors (see below), whose sum is σ = 25423515000. Its totient is φ = 25422798496.

The previous prime is 25423156741. The next prime is 25423156819. The reversal of 25423156747 is 74765132452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25423156747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25423156697 and 25423156706.

It is not an unprimeable number, because it can be changed into a prime (25423156741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32878 + ... + 227875.

It is an arithmetic number, because the mean of its divisors is an integer number (6355878750).

Almost surely, 2^25423156747 is an apocalyptic number.

25423156747 is a deficient number, since it is larger than the sum of its proper divisors (358253).

25423156747 is an equidigital number, since it uses as much as digits as its factorization.

25423156747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358252.

The product of its digits is 1411200, while the sum is 46.

The spelling of 25423156747 in words is "twenty-five billion, four hundred twenty-three million, one hundred fifty-six thousand, seven hundred forty-seven".