25616220301 has 16 divisors (see below), whose sum is σ = 30033859968. Its totient is φ = 21389702400.

The previous prime is 25616220281. The next prime is 25616220361. The reversal of 25616220301 is 10302261652.

It is a cyclic number.

It is not a de Polignac number, because 25616220301 - 2⁵ = 25616220269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25616220301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25616220361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130681 + ... + 261361.

It is an arithmetic number, because the mean of its divisors is an integer number (1877116248).

It is a Poulet number, since it divides 2^25616220300-1.

Almost surely, 2^25616220301 is an apocalyptic number.

25616220301 is the 130681-st pentagonal number.

It is an amenable number.

25616220301 is a deficient number, since it is larger than the sum of its proper divisors (4417639667).

25616220301 is a wasteful number, since it uses less digits than its factorization.

25616220301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131412.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 25616220301 its reverse (10302261652), we get a palindrome (35918481953).

The spelling of 25616220301 in words is "twenty-five billion, six hundred sixteen million, two hundred twenty thousand, three hundred one".