25880563561 has 8 divisors (see below), whose sum is σ = 26178906240. Its totient is φ = 25582388832.

The previous prime is 25880563531. The next prime is 25880563573. The reversal of 25880563561 is 16536508852.

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 25880563561 - 2⁵ = 25880563529 is a prime.

It is a super-2 number, since 2×25880563561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25880563531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282316 + ... + 362578.

It is an arithmetic number, because the mean of its divisors is an integer number (3272363280).

Almost surely, 2^25880563561 is an apocalyptic number.

It is an amenable number.

25880563561 is a deficient number, since it is larger than the sum of its proper divisors (298342679).

25880563561 is an equidigital number, since it uses as much as digits as its factorization.

25880563561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83975.

The product of its (nonzero) digits is 1728000, while the sum is 49.

The spelling of 25880563561 in words is "twenty-five billion, eight hundred eighty million, five hundred sixty-three thousand, five hundred sixty-one".