25523427 has 4 divisors (see below), whose sum is σ = 34031240. Its totient is φ = 17015616.

The previous prime is 25523419. The next prime is 25523429. The reversal of 25523427 is 72432552.

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

It is not a de Polignac number, because 25523427 - 2³ = 25523419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25523394 and 25523403.

It is not an unprimeable number, because it can be changed into a prime (25523429) 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, 4253902 + ... + 4253907.

It is an arithmetic number, because the mean of its divisors is an integer number (8507810).

Almost surely, 2^25523427 is an apocalyptic number.

25523427 is a deficient number, since it is larger than the sum of its proper divisors (8507813).

25523427 is an equidigital number, since it uses as much as digits as its factorization.

25523427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507812.

The product of its digits is 16800, while the sum is 30.

The square root of 25523427 is about 5052.0715553127. The cubic root of 25523427 is about 294.4283750206.

Adding to 25523427 its reverse (72432552), we get a palindrome (97955979).

The spelling of 25523427 in words is "twenty-five million, five hundred twenty-three thousand, four hundred twenty-seven".