25254375869 has 2 divisors, whose sum is σ = 25254375870. Its totient is φ = 25254375868.

The previous prime is 25254375851. The next prime is 25254375893. The reversal of 25254375869 is 96857345252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19074372100 + 6180003769 = 138110^2 + 78613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25254375869 is a prime.

It is a super-2 number, since 2×25254375869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25254378869) 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, 12627187934 + 12627187935.

It is an arithmetic number, because the mean of its divisors is an integer number (12627187935).

Almost surely, 2^25254375869 is an apocalyptic number.

It is an amenable number.

25254375869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25254375869 is an equidigital number, since it uses as much as digits as its factorization.

25254375869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144000, while the sum is 56.

The spelling of 25254375869 in words is "twenty-five billion, two hundred fifty-four million, three hundred seventy-five thousand, eight hundred sixty-nine".