25580417 has 4 divisors (see below), whose sum is σ = 25604436. Its totient is φ = 25556400.

The previous prime is 25580333. The next prime is 25580419. The reversal of 25580417 is 71408552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13808656 + 11771761 = 3716^2 + 3431^2 .

It is a cyclic number.

It is not a de Polignac number, because 25580417 - 2¹⁸ = 25318273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25580419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10334 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (6401109).

Almost surely, 2^25580417 is an apocalyptic number.

It is an amenable number.

25580417 is a deficient number, since it is larger than the sum of its proper divisors (24019).

25580417 is a wasteful number, since it uses less digits than its factorization.

25580417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24018.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 25580417 is about 5057.7086709299. The cubic root of 25580417 is about 294.6473503157.

Adding to 25580417 its reverse (71408552), we get a palindrome (96988969).

The spelling of 25580417 in words is "twenty-five million, five hundred eighty thousand, four hundred seventeen".