25340012324513 has 8 divisors (see below), whose sum is σ = 25371356053800. Its totient is φ = 25308670468608.

The previous prime is 25340012324453. The next prime is 25340012324531. The reversal of 25340012324513 is 31542321004352.

It can be written as a sum of positive squares in 4 ways, for example, as 3844391546944 + 21495620777569 = 1960712^2 + 4636337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25340012324513 - 2⁶ = 25340012324449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25340012324413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27642995 + ... + 28544967.

It is an arithmetic number, because the mean of its divisors is an integer number (3171419506725).

Almost surely, 2^{25340012324513} is an apocalyptic number.

It is an amenable number.

25340012324513 is a deficient number, since it is larger than the sum of its proper divisors (31343729287).

25340012324513 is an equidigital number, since it uses as much as digits as its factorization.

25340012324513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936691.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 25340012324513 its reverse (31542321004352), we get a palindrome (56882333328865).

The spelling of 25340012324513 in words is "twenty-five trillion, three hundred forty billion, twelve million, three hundred twenty-four thousand, five hundred thirteen".