25016505 has 16 divisors (see below), whose sum is σ = 40383360. Its totient is φ = 13223168.

The previous prime is 25016501. The next prime is 25016513. The reversal of 25016505 is 50561052.

It is a cyclic number.

It is not a de Polignac number, because 25016505 - 2² = 25016501 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25016501) 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, 5685 + ... + 9074.

It is an arithmetic number, because the mean of its divisors is an integer number (2523960).

Almost surely, 2^25016505 is an apocalyptic number.

It is an amenable number.

25016505 is a deficient number, since it is larger than the sum of its proper divisors (15366855).

25016505 is a wasteful number, since it uses less digits than its factorization.

25016505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14880.

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

The square root of 25016505 is about 5001.6502276749. The cubic root of 25016505 is about 292.4661075493.

Adding to 25016505 its reverse (50561052), we get a palindrome (75577557).

The spelling of 25016505 in words is "twenty-five million, sixteen thousand, five hundred five".