25610001 has 8 divisors (see below), whose sum is σ = 34192704. Its totient is φ = 17050320.

The previous prime is 25609979. The next prime is 25610003. The reversal of 25610001 is 10001652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25610001 - 2¹⁸ = 25347857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25610003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2965 + ... + 7746.

It is an arithmetic number, because the mean of its divisors is an integer number (4274088).

Almost surely, 2^25610001 is an apocalyptic number.

It is an amenable number.

25610001 is a deficient number, since it is larger than the sum of its proper divisors (8582703).

25610001 is a wasteful number, since it uses less digits than its factorization.

25610001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 25610001 is about 5060.6324703539. The cubic root of 25610001 is about 294.7608940602.

Adding to 25610001 its reverse (10001652), we get a palindrome (35611653).

The spelling of 25610001 in words is "twenty-five million, six hundred ten thousand, one".