25216023 has 16 divisors (see below), whose sum is σ = 38823680. Its totient is φ = 14259456.

The previous prime is 25216019. The next prime is 25216031. The reversal of 25216023 is 32061252.

It is not a de Polignac number, because 25216023 - 2² = 25216019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25216043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4153 + ... + 8226.

It is an arithmetic number, because the mean of its divisors is an integer number (2426480).

Almost surely, 2^25216023 is an apocalyptic number.

25216023 is a deficient number, since it is larger than the sum of its proper divisors (13607657).

25216023 is a wasteful number, since it uses less digits than its factorization.

25216023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 25216023 is about 5021.5558345995. Note that the first 3 decimals coincide. The cubic root of 25216023 is about 293.2415663645.

Adding to 25216023 its reverse (32061252), we get a palindrome (57277275).

The spelling of 25216023 in words is "twenty-five million, two hundred sixteen thousand, twenty-three".