25516005 has 16 divisors (see below), whose sum is σ = 40982784. Its totient is φ = 13556160.

The previous prime is 25516003. The next prime is 25516009. The reversal of 25516005 is 50061552.

It is not a de Polignac number, because 25516005 - 2¹ = 25516003 is a prime.

It is a super-2 number, since 2×25516005² = 1302133022320050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25516003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (2561424).

Almost surely, 2^25516005 is an apocalyptic number.

It is an amenable number.

25516005 is a deficient number, since it is larger than the sum of its proper divisors (15466779).

25516005 is a wasteful number, since it uses less digits than its factorization.

25516005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 25516005 is about 5051.3369517386. The cubic root of 25516005 is about 294.3998331474.

Adding to 25516005 its reverse (50061552), we get a palindrome (75577557).

The spelling of 25516005 in words is "twenty-five million, five hundred sixteen thousand, five".