25465109 has 2 divisors, whose sum is σ = 25465110. Its totient is φ = 25465108.

The previous prime is 25465091. The next prime is 25465127. The reversal of 25465109 is 90156452.

It is a happy number.

Together with previous prime (25465091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (25465091) and next prime (25465127).

It can be written as a sum of positive squares in only one way, i.e., 23280625 + 2184484 = 4825^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 25465109 - 2⁸ = 25464853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25465129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12732554 + 12732555.

It is an arithmetic number, because the mean of its divisors is an integer number (12732555).

Almost surely, 2^25465109 is an apocalyptic number.

It is an amenable number.

25465109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25465109 is an equidigital number, since it uses as much as digits as its factorization.

25465109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 25465109 is about 5046.2965628270. The cubic root of 25465109 is about 294.2039593874.

The spelling of 25465109 in words is "twenty-five million, four hundred sixty-five thousand, one hundred nine".