25660323511026 has 16 divisors (see below), whose sum is σ = 51396453008064. Its totient is φ = 8540806839344.

The previous prime is 25660323511003. The next prime is 25660323511027. The reversal of 25660323511026 is 62011532306652.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25660323511027) 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, 3158578350 + ... + 3158586473.

It is an arithmetic number, because the mean of its divisors is an integer number (3212278313004).

Almost surely, 2^{25660323511026} is an apocalyptic number.

25660323511026 is an abundant number, since it is smaller than the sum of its proper divisors (25736129497038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25660323511026 is a wasteful number, since it uses less digits than its factorization.

25660323511026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317165505.

The product of its (nonzero) digits is 388800, while the sum is 42.

Adding to 25660323511026 its reverse (62011532306652), we get a palindrome (87671855817678).

The spelling of 25660323511026 in words is "twenty-five trillion, six hundred sixty billion, three hundred twenty-three million, five hundred eleven thousand, twenty-six".