25617045 has 16 divisors (see below), whose sum is σ = 43398720. Its totient is φ = 12858624.

The previous prime is 25617041. The next prime is 25617103. The reversal of 25617045 is 54071652.

It is not a de Polignac number, because 25617045 - 2² = 25617041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25617041) 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, 49975 + ... + 50484.

It is an arithmetic number, because the mean of its divisors is an integer number (2712420).

Almost surely, 2^25617045 is an apocalyptic number.

It is an amenable number.

25617045 is a deficient number, since it is larger than the sum of its proper divisors (17781675).

25617045 is a wasteful number, since it uses less digits than its factorization.

25617045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100484.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 25617045 is about 5061.3283829445. The cubic root of 25617045 is about 294.7879161261.

Adding to 25617045 its reverse (54071652), we get a palindrome (79688697).

The spelling of 25617045 in words is "twenty-five million, six hundred seventeen thousand, forty-five".