25240415 has 4 divisors (see below), whose sum is σ = 30288504. Its totient is φ = 20192328.

The previous prime is 25240403. The next prime is 25240447. The reversal of 25240415 is 51404252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25240415 - 2⁴ = 25240399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2524037 + ... + 2524046.

It is an arithmetic number, because the mean of its divisors is an integer number (7572126).

Almost surely, 2^25240415 is an apocalyptic number.

25240415 is a deficient number, since it is larger than the sum of its proper divisors (5048089).

25240415 is an equidigital number, since it uses as much as digits as its factorization.

25240415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048088.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 25240415 is about 5023.9839768853. The cubic root of 25240415 is about 293.3360888458.

Adding to 25240415 its reverse (51404252), we get a palindrome (76644667).

The spelling of 25240415 in words is "twenty-five million, two hundred forty thousand, four hundred fifteen".