25030505 has 16 divisors (see below), whose sum is σ = 31821120. Its totient is φ = 18848448.

The previous prime is 25030493. The next prime is 25030507. The reversal of 25030505 is 50503052.

It is a cyclic number.

It is not a de Polignac number, because 25030505 - 2¹⁰ = 25029481 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 (25030507) 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, 15674 + ... + 17196.

It is an arithmetic number, because the mean of its divisors is an integer number (1988820).

Almost surely, 2^25030505 is an apocalyptic number.

It is an amenable number.

25030505 is a deficient number, since it is larger than the sum of its proper divisors (6790615).

25030505 is a wasteful number, since it uses less digits than its factorization.

25030505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 25030505 is about 5003.0495700123. The cubic root of 25030505 is about 292.5206550296.

Adding to 25030505 its reverse (50503052), we get a palindrome (75533557).

The spelling of 25030505 in words is "twenty-five million, thirty thousand, five hundred five".