25265869 has 2 divisors, whose sum is σ = 25265870. Its totient is φ = 25265868.

The previous prime is 25265833. The next prime is 25265887. The reversal of 25265869 is 96856252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24950025 + 315844 = 4995^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 25265869 - 2¹⁹ = 24741581 is a prime.

It is a super-2 number, since 2×25265869² = 1276728272650322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25265809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12632934 + 12632935.

It is an arithmetic number, because the mean of its divisors is an integer number (12632935).

Almost surely, 2^25265869 is an apocalyptic number.

It is an amenable number.

25265869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25265869 is an equidigital number, since it uses as much as digits as its factorization.

25265869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 43.

The square root of 25265869 is about 5026.5165870611. The cubic root of 25265869 is about 293.4346618195.

The spelling of 25265869 in words is "twenty-five million, two hundred sixty-five thousand, eight hundred sixty-nine".