25623001 has 8 divisors (see below), whose sum is σ = 27235520. Its totient is φ = 24036912.

The previous prime is 25622999. The next prime is 25623007. The reversal of 25623001 is 10032652.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25623001 - 2¹ = 25622999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25623001.

It is not an unprimeable number, because it can be changed into a prime (25623007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4590 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (3404440).

Almost surely, 2^25623001 is an apocalyptic number.

It is an amenable number.

25623001 is a deficient number, since it is larger than the sum of its proper divisors (1612519).

25623001 is a wasteful number, since it uses less digits than its factorization.

25623001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13215.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 25623001 is about 5061.9167318319. The cubic root of 25623001 is about 294.8107605613.

Adding to 25623001 its reverse (10032652), we get a palindrome (35655653).

The spelling of 25623001 in words is "twenty-five million, six hundred twenty-three thousand, one".