25255253069 has 2 divisors, whose sum is σ = 25255253070. Its totient is φ = 25255253068.

The previous prime is 25255253053. The next prime is 25255253099. The reversal of 25255253069 is 96035255252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21327097444 + 3928155625 = 146038^2 + 62675^2 .

It is a cyclic number.

It is not a de Polignac number, because 25255253069 - 2⁴ = 25255253053 is a prime.

It is a super-2 number, since 2×25255253069² (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 (25255253099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12627626534 + 12627626535.

It is an arithmetic number, because the mean of its divisors is an integer number (12627626535).

Almost surely, 2^25255253069 is an apocalyptic number.

It is an amenable number.

25255253069 is a deficient number, since it is larger than the sum of its proper divisors (1).

25255253069 is an equidigital number, since it uses as much as digits as its factorization.

25255253069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 25255253069 in words is "twenty-five billion, two hundred fifty-five million, two hundred fifty-three thousand, sixty-nine".