25343411131561 has 8 divisors (see below), whose sum is σ = 25472207302344. Its totient is φ = 25214616470400.

The previous prime is 25343411131559. The next prime is 25343411131583. The reversal of 25343411131561 is 16513111434352.

It can be written as a sum of positive squares in 4 ways, for example, as 16921046790400 + 8422364341161 = 4113520^2 + 2902131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25343411131561 - 2¹ = 25343411131559 is a prime.

It is a super-3 number, since 3×25343411131561³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25343411131361) 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 7 ways as a sum of consecutive naturals, for example, 51012391 + ... + 51506803.

It is an arithmetic number, because the mean of its divisors is an integer number (3184025912793).

Almost surely, 2^{25343411131561} is an apocalyptic number.

It is an amenable number.

25343411131561 is a deficient number, since it is larger than the sum of its proper divisors (128796170783).

25343411131561 is a wasteful number, since it uses less digits than its factorization.

25343411131561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754811.

The product of its digits is 129600, while the sum is 40.

The spelling of 25343411131561 in words is "twenty-five trillion, three hundred forty-three billion, four hundred eleven million, one hundred thirty-one thousand, five hundred sixty-one".