25201234605 has 32 divisors (see below), whose sum is σ = 42781734144. Its totient is φ = 12623993856.

The previous prime is 25201234601. The next prime is 25201234621. The reversal of 25201234605 is 50643210252.

It is not a de Polignac number, because 25201234605 - 2² = 25201234601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25201234601) 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 31 ways as a sum of consecutive naturals, for example, 22719 + ... + 225651.

It is an arithmetic number, because the mean of its divisors is an integer number (1336929192).

Almost surely, 2^25201234605 is an apocalyptic number.

It is an amenable number.

25201234605 is a deficient number, since it is larger than the sum of its proper divisors (17580499539).

25201234605 is a wasteful number, since it uses less digits than its factorization.

25201234605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203445.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 25201234605 its reverse (50643210252), we get a palindrome (75844444857).

The spelling of 25201234605 in words is "twenty-five billion, two hundred one million, two hundred thirty-four thousand, six hundred five".