25553025 has 27 divisors (see below), whose sum is σ = 45904521. Its totient is φ = 13587840.

The previous prime is 25552999. The next prime is 25553027. The reversal of 25553025 is 52035552.

The square root of 25553025 is 5055.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3538161 + 22014864 = 1881^2 + 4692^2 .

It is not a de Polignac number, because 25553025 - 2¹¹ = 25550977 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25553025.

It is not an unprimeable number, because it can be changed into a prime (25553027) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 75657 + ... + 75993.

Almost surely, 2^25553025 is an apocalyptic number.

25553025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25553025 is the 5055-th square number.

25553025 is the 2528-th centered octagonal number.

It is an amenable number.

25553025 is a deficient number, since it is larger than the sum of its proper divisors (20351496).

25553025 is an equidigital number, since it uses as much as digits as its factorization.

25553025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The cubic root of 25553025 is about 294.5421414132.

Adding to 25553025 its reverse (52035552), we get a palindrome (77588577).

The spelling of 25553025 in words is "twenty-five million, five hundred fifty-three thousand, twenty-five".