25697422763 has 2 divisors, whose sum is σ = 25697422764. Its totient is φ = 25697422762.

The previous prime is 25697422747. The next prime is 25697422771. The reversal of 25697422763 is 36722479652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25697422763 - 2⁴ = 25697422747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25697422733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12848711381 + 12848711382.

It is an arithmetic number, because the mean of its divisors is an integer number (12848711382).

Almost surely, 2^25697422763 is an apocalyptic number.

25697422763 is a deficient number, since it is larger than the sum of its proper divisors (1).

25697422763 is an equidigital number, since it uses as much as digits as its factorization.

25697422763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 53.

The spelling of 25697422763 in words is "twenty-five billion, six hundred ninety-seven million, four hundred twenty-two thousand, seven hundred sixty-three".