25023945 has 16 divisors (see below), whose sum is σ = 40223232. Its totient is φ = 13284480.

The previous prime is 25023941. The next prime is 25023959. The reversal of 25023945 is 54932052.

It is not a de Polignac number, because 25023945 - 2² = 25023941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25023941) 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, 396 + ... + 7085.

It is an arithmetic number, because the mean of its divisors is an integer number (2513952).

Almost surely, 2^25023945 is an apocalyptic number.

It is an amenable number.

25023945 is a deficient number, since it is larger than the sum of its proper divisors (15199287).

25023945 is a wasteful number, since it uses less digits than its factorization.

25023945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7712.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 25023945 is about 5002.3939269114. The cubic root of 25023945 is about 292.4950981719.

Adding to 25023945 its reverse (54932052), we get a palindrome (79955997).

The spelling of 25023945 in words is "twenty-five million, twenty-three thousand, nine hundred forty-five".