25244001 has 16 divisors (see below), whose sum is σ = 37537920. Its totient is φ = 16766640.

The previous prime is 25243993. The next prime is 25244003. The reversal of 25244001 is 10044252.

It is not a de Polignac number, because 25244001 - 2³ = 25243993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25244003) 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, 6316 + ... + 9506.

It is an arithmetic number, because the mean of its divisors is an integer number (2346120).

Almost surely, 2^25244001 is an apocalyptic number.

It is an amenable number.

25244001 is a deficient number, since it is larger than the sum of its proper divisors (12293919).

25244001 is a wasteful number, since it uses less digits than its factorization.

25244001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493 (or 3487 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 25244001 is about 5024.3408522910. The cubic root of 25244001 is about 293.3499799724.

Adding to 25244001 its reverse (10044252), we get a palindrome (35288253).

It can be divided in two parts, 252 and 44001, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 25244001 in words is "twenty-five million, two hundred forty-four thousand, one".