25261417 has 8 divisors (see below), whose sum is σ = 26017992. Its totient is φ = 24508800.

The previous prime is 25261409. The next prime is 25261421. The reversal of 25261417 is 71416252.

It can be written as a sum of positive squares in 4 ways, for example, as 5645376 + 19616041 = 2376^2 + 4429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25261417 - 2³ = 25261409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25261427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16317 + ... + 17797.

It is an arithmetic number, because the mean of its divisors is an integer number (3252249).

Almost surely, 2^25261417 is an apocalyptic number.

It is an amenable number.

25261417 is a deficient number, since it is larger than the sum of its proper divisors (756575).

25261417 is a wasteful number, since it uses less digits than its factorization.

25261417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979.

The product of its digits is 3360, while the sum is 28.

The square root of 25261417 is about 5026.0737161327. The cubic root of 25261417 is about 293.4174258155.

Adding to 25261417 its reverse (71416252), we get a palindrome (96677669).

The spelling of 25261417 in words is "twenty-five million, two hundred sixty-one thousand, four hundred seventeen".