25105001 has 4 divisors (see below), whose sum is σ = 25129104. Its totient is φ = 25080900.

The previous prime is 25104953. The next prime is 25105019. The reversal of 25105001 is 10050152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25105001 - 2¹⁰ = 25103977 is a prime.

It is a super-2 number, since 2×25105001² = 1260522150420002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25105601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10415 + ... + 12596.

It is an arithmetic number, because the mean of its divisors is an integer number (6282276).

Almost surely, 2^25105001 is an apocalyptic number.

It is an amenable number.

25105001 is a deficient number, since it is larger than the sum of its proper divisors (24103).

25105001 is a wasteful number, since it uses less digits than its factorization.

25105001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24102.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 25105001 is about 5010.4890978826. The cubic root of 25105001 is about 292.8105684185.

Adding to 25105001 its reverse (10050152), we get a palindrome (35155153).

The spelling of 25105001 in words is "twenty-five million, one hundred five thousand, one".