25652001 has 4 divisors (see below), whose sum is σ = 34202672. Its totient is φ = 17101332.

The previous prime is 25651991. The next prime is 25652023. The reversal of 25652001 is 10025652.

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 not a de Polignac number, because 25652001 - 2¹⁵ = 25619233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25652041) 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, 4275331 + ... + 4275336.

It is an arithmetic number, because the mean of its divisors is an integer number (8550668).

Almost surely, 2^25652001 is an apocalyptic number.

It is an amenable number.

25652001 is a deficient number, since it is larger than the sum of its proper divisors (8550671).

25652001 is an equidigital number, since it uses as much as digits as its factorization.

25652001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8550670.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 25652001 is about 5064.7804493384. The cubic root of 25652001 is about 294.9219404689.

Adding to 25652001 its reverse (10025652), we get a palindrome (35677653).

The spelling of 25652001 in words is "twenty-five million, six hundred fifty-two thousand, one".