25205112361 has 32 divisors (see below), whose sum is σ = 30459340800. Its totient is φ = 20547406080.

The previous prime is 25205112353. The next prime is 25205112421. The reversal of 25205112361 is 16321150252.

It is a cyclic number.

It is not a de Polignac number, because 25205112361 - 2³ = 25205112353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25205112761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3747960 + ... + 3754678.

It is an arithmetic number, because the mean of its divisors is an integer number (951854400).

Almost surely, 2^25205112361 is an apocalyptic number.

It is an amenable number.

25205112361 is a deficient number, since it is larger than the sum of its proper divisors (5254228439).

25205112361 is a wasteful number, since it uses less digits than its factorization.

25205112361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 25205112361 in words is "twenty-five billion, two hundred five million, one hundred twelve thousand, three hundred sixty-one".