25661310562041 has 32 divisors (see below), whose sum is σ = 44902908441600. Its totient is φ = 12628942994880.

The previous prime is 25661310562037. The next prime is 25661310562067. The reversal of 25661310562041 is 14026501316652.

It is not a de Polignac number, because 25661310562041 - 2² = 25661310562037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25661310561984 and 25661310562002.

It is not an unprimeable number, because it can be changed into a prime (25661310561041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2923362046 + ... + 2923370823.

It is an arithmetic number, because the mean of its divisors is an integer number (1403215888800).

Almost surely, 2^{25661310562041} is an apocalyptic number.

25661310562041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25661310562041 is a deficient number, since it is larger than the sum of its proper divisors (19241597879559).

25661310562041 is a wasteful number, since it uses less digits than its factorization.

25661310562041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846732909.

The product of its (nonzero) digits is 259200, while the sum is 42.

Adding to 25661310562041 its reverse (14026501316652), we get a palindrome (39687811878693).

The spelling of 25661310562041 in words is "twenty-five trillion, six hundred sixty-one billion, three hundred ten million, five hundred sixty-two thousand, forty-one".