25612435201 has 4 divisors (see below), whose sum is σ = 25706946304. Its totient is φ = 25517924100.

The previous prime is 25612435187. The next prime is 25612435237. The reversal of 25612435201 is 10253421652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25612435201 - 2⁵ = 25612435169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25612435291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47255145 + ... + 47255686.

It is an arithmetic number, because the mean of its divisors is an integer number (6426736576).

Almost surely, 2^25612435201 is an apocalyptic number.

It is an amenable number.

25612435201 is a deficient number, since it is larger than the sum of its proper divisors (94511103).

25612435201 is an equidigital number, since it uses as much as digits as its factorization.

25612435201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94511102.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 25612435201 its reverse (10253421652), we get a palindrome (35865856853).

The spelling of 25612435201 in words is "twenty-five billion, six hundred twelve million, four hundred thirty-five thousand, two hundred one".