25231962641 has 2 divisors, whose sum is σ = 25231962642. Its totient is φ = 25231962640.

The previous prime is 25231962631. The next prime is 25231962653. The reversal of 25231962641 is 14626913252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25172995600 + 58967041 = 158660^2 + 7679^2 .

It is a cyclic number.

It is not a de Polignac number, because 25231962641 - 2¹⁰ = 25231961617 is a prime.

It is not a weakly prime, because it can be changed into another prime (25231962611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12615981320 + 12615981321.

It is an arithmetic number, because the mean of its divisors is an integer number (12615981321).

Almost surely, 2^25231962641 is an apocalyptic number.

It is an amenable number.

25231962641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25231962641 is an equidigital number, since it uses as much as digits as its factorization.

25231962641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The spelling of 25231962641 in words is "twenty-five billion, two hundred thirty-one million, nine hundred sixty-two thousand, six hundred forty-one".