25504523 has 4 divisors (see below), whose sum is σ = 27823128. Its totient is φ = 23185920.

The previous prime is 25504519. The next prime is 25504541. The reversal of 25504523 is 32540552.

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 25504523 - 2² = 25504519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25504492 and 25504501.

It is not an unprimeable number, because it can be changed into a prime (25504223) 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 3 ways as a sum of consecutive naturals, for example, 1159286 + ... + 1159307.

It is an arithmetic number, because the mean of its divisors is an integer number (6955782).

Almost surely, 2^25504523 is an apocalyptic number.

25504523 is a deficient number, since it is larger than the sum of its proper divisors (2318605).

25504523 is a wasteful number, since it uses less digits than its factorization.

25504523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318604.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 25504523 is about 5050.2002930577. The cubic root of 25504523 is about 294.3556673249.

The spelling of 25504523 in words is "twenty-five million, five hundred four thousand, five hundred twenty-three".