25660154312125 has 16 divisors (see below), whose sum is σ = 32024014304256. Its totient is φ = 20528032602000.

The previous prime is 25660154312087. The next prime is 25660154312129. The reversal of 25660154312125 is 52121345106652.

It is not a de Polignac number, because 25660154312125 - 2⁴³ = 16864061289917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660154312129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52482540 + ... + 52969210.

It is an arithmetic number, because the mean of its divisors is an integer number (2001500894016).

Almost surely, 2^{25660154312125} is an apocalyptic number.

25660154312125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25660154312125 is a deficient number, since it is larger than the sum of its proper divisors (6363859992131).

25660154312125 is an equidigital number, since it uses as much as digits as its factorization.

25660154312125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908493 (or 908483 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

Adding to 25660154312125 its reverse (52121345106652), we get a palindrome (77781499418777).

The spelling of 25660154312125 in words is "twenty-five trillion, six hundred sixty billion, one hundred fifty-four million, three hundred twelve thousand, one hundred twenty-five".