25523425 has 12 divisors (see below), whose sum is σ = 31712256. Its totient is φ = 20378000.

The previous prime is 25523419. The next prime is 25523429. The reversal of 25523425 is 52432552.

It is not a de Polignac number, because 25523425 - 2¹⁵ = 25490657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25523393 and 25523402.

It is not an unprimeable number, because it can be changed into a prime (25523429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21600 + ... + 22750.

It is an arithmetic number, because the mean of its divisors is an integer number (2642688).

Almost surely, 2^25523425 is an apocalyptic number.

25523425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25523425 is a deficient number, since it is larger than the sum of its proper divisors (6188831).

25523425 is a wasteful number, since it uses less digits than its factorization.

25523425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 2043 counting only the distinct ones).

The product of its digits is 12000, while the sum is 28.

The square root of 25523425 is about 5052.0713573741. The cubic root of 25523425 is about 294.4283673302.

Adding to 25523425 its reverse (52432552), we get a palindrome (77955977).

The spelling of 25523425 in words is "twenty-five million, five hundred twenty-three thousand, four hundred twenty-five".