25360206343261 has 4 divisors (see below), whose sum is σ = 25361398719900. Its totient is φ = 25359013966624.

The previous prime is 25360206343259. The next prime is 25360206343309. The reversal of 25360206343261 is 16234360206352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13645118844900 + 11715087498361 = 3693930^2 + 3422731^2 .

It is a cyclic number.

It is not a de Polignac number, because 25360206343261 - 2¹ = 25360206343259 is a prime.

It is a super-2 number, since 2×25360206343261² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25360206343201) 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, 596156416 + ... + 596198953.

It is an arithmetic number, because the mean of its divisors is an integer number (6340349679975).

Almost surely, 2^{25360206343261} is an apocalyptic number.

It is an amenable number.

25360206343261 is a deficient number, since it is larger than the sum of its proper divisors (1192376639).

25360206343261 is a wasteful number, since it uses less digits than its factorization.

25360206343261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192376638.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 25360206343261 in words is "twenty-five trillion, three hundred sixty billion, two hundred six million, three hundred forty-three thousand, two hundred sixty-one".