25242001 has 4 divisors (see below), whose sum is σ = 25561600. Its totient is φ = 24922404.

The previous prime is 25241999. The next prime is 25242011. The reversal of 25242001 is 10024252.

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 25242001 - 2¹ = 25241999 is a prime.

It is a super-2 number, since 2×25242001² = 1274317228968002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25242011) 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, 159681 + ... + 159838.

It is an arithmetic number, because the mean of its divisors is an integer number (6390400).

Almost surely, 2^25242001 is an apocalyptic number.

It is an amenable number.

25242001 is a deficient number, since it is larger than the sum of its proper divisors (319599).

25242001 is an equidigital number, since it uses as much as digits as its factorization.

25242001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319598.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 25242001 is about 5024.1418172659. The cubic root of 25242001 is about 293.3422327132.

Adding to 25242001 its reverse (10024252), we get a palindrome (35266253).

The spelling of 25242001 in words is "twenty-five million, two hundred forty-two thousand, one".