25166929 has 2 divisors, whose sum is σ = 25166930. Its totient is φ = 25166928.

The previous prime is 25166927. The next prime is 25166971. The reversal of 25166929 is 92966152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22344529 + 2822400 = 4727^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 25166929 - 2¹ = 25166927 is a prime.

Together with 25166927, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25166891 and 25166900.

It is not a weakly prime, because it can be changed into another prime (25166927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12583464 + 12583465.

It is an arithmetic number, because the mean of its divisors is an integer number (12583465).

Almost surely, 2^25166929 is an apocalyptic number.

It is an amenable number.

25166929 is a deficient number, since it is larger than the sum of its proper divisors (1).

25166929 is an equidigital number, since it uses as much as digits as its factorization.

25166929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 25166929 is about 5016.6651273530. The cubic root of 25166929 is about 293.0511351383.

The spelling of 25166929 in words is "twenty-five million, one hundred sixty-six thousand, nine hundred twenty-nine".