25146109 has 2 divisors, whose sum is σ = 25146110. Its totient is φ = 25146108.

The previous prime is 25146097. The next prime is 25146119. The reversal of 25146109 is 90164152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22752900 + 2393209 = 4770^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 25146109 - 2¹¹ = 25144061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25146119) 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, 12573054 + 12573055.

It is an arithmetic number, because the mean of its divisors is an integer number (12573055).

Almost surely, 2^25146109 is an apocalyptic number.

It is an amenable number.

25146109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25146109 is an equidigital number, since it uses as much as digits as its factorization.

25146109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 25146109 is about 5014.5896143154. The cubic root of 25146109 is about 292.9703014391.

It can be divided in two parts, 251 and 46109, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 25146109 in words is "twenty-five million, one hundred forty-six thousand, one hundred nine".