25513153656161 has 8 divisors (see below), whose sum is σ = 25584935658240. Its totient is φ = 25441469518608.

The previous prime is 25513153656149. The next prime is 25513153656259. The reversal of 25513153656161 is 16165635131552.

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 25513153656161 - 2⁶ = 25513153656097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25513153656761) 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, 23943986 + ... + 24986811.

It is an arithmetic number, because the mean of its divisors is an integer number (3198116957280).

Almost surely, 2^{25513153656161} is an apocalyptic number.

It is an amenable number.

25513153656161 is a deficient number, since it is larger than the sum of its proper divisors (71782002079).

25513153656161 is an equidigital number, since it uses as much as digits as its factorization.

25513153656161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48932263.

The product of its digits is 2430000, while the sum is 50.

The spelling of 25513153656161 in words is "twenty-five trillion, five hundred thirteen billion, one hundred fifty-three million, six hundred fifty-six thousand, one hundred sixty-one".