25416523 has 4 divisors (see below), whose sum is σ = 27727128. Its totient is φ = 23105920.

The previous prime is 25416493. The next prime is 25416527. The reversal of 25416523 is 32561452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25416523 - 2⁵ = 25416491 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25416491 and 25416500.

It is not an unprimeable number, because it can be changed into a prime (25416527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155286 + ... + 1155307.

It is an arithmetic number, because the mean of its divisors is an integer number (6931782).

Almost surely, 2^25416523 is an apocalyptic number.

25416523 is a deficient number, since it is larger than the sum of its proper divisors (2310605).

25416523 is a wasteful number, since it uses less digits than its factorization.

25416523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310604.

The product of its digits is 7200, while the sum is 28.

The square root of 25416523 is about 5041.4802389774. The cubic root of 25416523 is about 294.0167320448.

Adding to 25416523 its reverse (32561452), we get a palindrome (57977975).

Subtracting 25416523 from its reverse (32561452), we obtain a square (7144929 = 2673²).

The spelling of 25416523 in words is "twenty-five million, four hundred sixteen thousand, five hundred twenty-three".