25007725 has 18 divisors (see below), whose sum is σ = 31806186. Its totient is φ = 19504800.

The previous prime is 25007711. The next prime is 25007729. The reversal of 25007725 is 52770052.

It can be written as a sum of positive squares in 3 ways, for example, as 978121 + 24029604 = 989^2 + 4902^2 .

It is not a de Polignac number, because 25007725 - 2¹⁷ = 24876653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25007693 and 25007702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25007729) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45955 + ... + 46495.

Almost surely, 2^25007725 is an apocalyptic number.

25007725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25007725 is a deficient number, since it is larger than the sum of its proper divisors (6798461).

25007725 is an equidigital number, since it uses as much as digits as its factorization.

25007725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 25007725 is about 5000.7724403336. The cubic root of 25007725 is about 292.4318881024.

Adding to 25007725 its reverse (52770052), we get a palindrome (77777777).

The spelling of 25007725 in words is "twenty-five million, seven thousand, seven hundred twenty-five".