25115425 has 24 divisors (see below), whose sum is σ = 33569280. Its totient is φ = 18585600.

The previous prime is 25115423. The next prime is 25115429. The reversal of 25115425 is 52451152.

It is not a de Polignac number, because 25115425 - 2¹ = 25115423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 25115425.

It is not an unprimeable number, because it can be changed into a prime (25115423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17121 + ... + 18529.

It is an arithmetic number, because the mean of its divisors is an integer number (1398720).

Almost surely, 2^25115425 is an apocalyptic number.

25115425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25115425 is a deficient number, since it is larger than the sum of its proper divisors (8453855).

25115425 is a wasteful number, since it uses less digits than its factorization.

25115425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473 (or 1468 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 25115425 is about 5011.5292077369. The cubic root of 25115425 is about 292.8510893624.

Adding to 25115425 its reverse (52451152), we get a palindrome (77566577).

The spelling of 25115425 in words is "twenty-five million, one hundred fifteen thousand, four hundred twenty-five".