25275969 has 20 divisors (see below), whose sum is σ = 38159044. Its totient is φ = 16671744.

The previous prime is 25275961. The next prime is 25275983. The reversal of 25275969 is 96957252.

25275969 is a `hidden beast` number, since 2 + 52 + 7 + 596 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17740944 + 7535025 = 4212^2 + 2745^2 .

It is not a de Polignac number, because 25275969 - 2³ = 25275961 is a prime.

It is a super-2 number, since 2×25275969² = 1277749217777922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25275961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6249 + ... + 9465.

Almost surely, 2^25275969 is an apocalyptic number.

It is an amenable number.

25275969 is a deficient number, since it is larger than the sum of its proper divisors (12883075).

25275969 is an equidigital number, since it uses as much as digits as its factorization.

25275969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326 (or 3317 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 25275969 is about 5027.5211585830. The cubic root of 25275969 is about 293.4737566587.

It can be divided in two parts, 25275 and 969, that added together give a square (26244 = 162²).

The spelling of 25275969 in words is "twenty-five million, two hundred seventy-five thousand, nine hundred sixty-nine".