25646851490613 has 8 divisors (see below), whose sum is σ = 34195847130048. Its totient is φ = 17097878422464.

The previous prime is 25646851490591. The next prime is 25646851490621. The reversal of 25646851490613 is 31609415864652.

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

It is not a de Polignac number, because 25646851490613 - 2¹² = 25646851486517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25646851490653) 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, 2784745 + ... + 7684302.

It is an arithmetic number, because the mean of its divisors is an integer number (4274480891256).

Almost surely, 2^{25646851490613} is an apocalyptic number.

It is an amenable number.

25646851490613 is a deficient number, since it is larger than the sum of its proper divisors (8548995639435).

25646851490613 is a wasteful number, since it uses less digits than its factorization.

25646851490613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285643.

The product of its (nonzero) digits is 37324800, while the sum is 60.

The spelling of 25646851490613 in words is "twenty-five trillion, six hundred forty-six billion, eight hundred fifty-one million, four hundred ninety thousand, six hundred thirteen".