25124315305 has 16 divisors (see below), whose sum is σ = 32053605120. Its totient is φ = 18862811968.

The previous prime is 25124315291. The next prime is 25124315323. The reversal of 25124315305 is 50351342152.

It is a cyclic number.

It is not a de Polignac number, because 25124315305 - 2¹⁷ = 25124184233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2054965 + ... + 2067154.

It is an arithmetic number, because the mean of its divisors is an integer number (2003350320).

Almost surely, 2^25124315305 is an apocalyptic number.

It is an amenable number.

25124315305 is a deficient number, since it is larger than the sum of its proper divisors (6929289815).

25124315305 is a wasteful number, since it uses less digits than its factorization.

25124315305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122200.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 25124315305 its reverse (50351342152), we get a palindrome (75475657457).

The spelling of 25124315305 in words is "twenty-five billion, one hundred twenty-four million, three hundred fifteen thousand, three hundred five".