25515005 has 16 divisors (see below), whose sum is σ = 32356800. Its totient is φ = 19261440.

The previous prime is 25514989. The next prime is 25515029. The reversal of 25515005 is 50051552.

It is not a de Polignac number, because 25515005 - 2⁴ = 25514989 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39485 + ... + 40125.

It is an arithmetic number, because the mean of its divisors is an integer number (2022300).

Almost surely, 2^25515005 is an apocalyptic number.

It is an amenable number.

25515005 is a deficient number, since it is larger than the sum of its proper divisors (6841795).

25515005 is a wasteful number, since it uses less digits than its factorization.

25515005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 25515005 is about 5051.2379670730. The cubic root of 25515005 is about 294.3959871472.

Adding to 25515005 its reverse (50051552), we get a palindrome (75566557).

The spelling of 25515005 in words is "twenty-five million, five hundred fifteen thousand, five".