25160661564603 has 4 divisors (see below), whose sum is σ = 33547548752808. Its totient is φ = 16773774376400.

The previous prime is 25160661564463. The next prime is 25160661564637. The reversal of 25160661564603 is 30646516606152.

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

It is a cyclic number.

It is not a de Polignac number, because 25160661564603 - 2⁸ = 25160661564347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25160661574603) 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, 4193443594098 + ... + 4193443594103.

It is an arithmetic number, because the mean of its divisors is an integer number (8386887188202).

Almost surely, 2^{25160661564603} is an apocalyptic number.

25160661564603 is a deficient number, since it is larger than the sum of its proper divisors (8386887188205).

25160661564603 is an equidigital number, since it uses as much as digits as its factorization.

25160661564603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8386887188204.

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 25160661564603 in words is "twenty-five trillion, one hundred sixty billion, six hundred sixty-one million, five hundred sixty-four thousand, six hundred three".