25475818719469 has 2 divisors, whose sum is σ = 25475818719470. Its totient is φ = 25475818719468.

The previous prime is 25475818719433. The next prime is 25475818719493. The reversal of 25475818719469 is 96491781857452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21830247121225 + 3645571598244 = 4672285^2 + 1909338^2 .

It is a cyclic number.

It is not a de Polignac number, because 25475818719469 - 2¹⁵ = 25475818686701 is a prime.

It is a super-2 number, since 2×25475818719469² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25475818719395 and 25475818719404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25475818717469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12737909359734 + 12737909359735.

It is an arithmetic number, because the mean of its divisors is an integer number (12737909359735).

Almost surely, 2^{25475818719469} is an apocalyptic number.

It is an amenable number.

25475818719469 is a deficient number, since it is larger than the sum of its proper divisors (1).

25475818719469 is an equidigital number, since it uses as much as digits as its factorization.

25475818719469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1219276800, while the sum is 76.

The spelling of 25475818719469 in words is "twenty-five trillion, four hundred seventy-five billion, eight hundred eighteen million, seven hundred nineteen thousand, four hundred sixty-nine".