25423340545 has 32 divisors (see below), whose sum is σ = 32464373760. Its totient is φ = 19058976000.

The previous prime is 25423340519. The next prime is 25423340561. The reversal of 25423340545 is 54504332452.

It is not a de Polignac number, because 25423340545 - 2¹¹ = 25423338497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3280375 + ... + 3288115.

It is an arithmetic number, because the mean of its divisors is an integer number (1014511680).

Almost surely, 2^25423340545 is an apocalyptic number.

It is an amenable number.

25423340545 is a deficient number, since it is larger than the sum of its proper divisors (7041033215).

25423340545 is a wasteful number, since it uses less digits than its factorization.

25423340545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8137.

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 25423340545 its reverse (54504332452), we get a palindrome (79927672997).

The spelling of 25423340545 in words is "twenty-five billion, four hundred twenty-three million, three hundred forty thousand, five hundred forty-five".