25700725 has 6 divisors (see below), whose sum is σ = 31868930. Its totient is φ = 20560560.

The previous prime is 25700723. The next prime is 25700737. The reversal of 25700725 is 52700752.

It can be written as a sum of positive squares in 3 ways, for example, as 5692996 + 20007729 = 2386^2 + 4473^2 .

It is not a de Polignac number, because 25700725 - 2¹ = 25700723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25700693 and 25700702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25700723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 513990 + ... + 514039.

Almost surely, 2^25700725 is an apocalyptic number.

25700725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25700725 is a deficient number, since it is larger than the sum of its proper divisors (6168205).

25700725 is a wasteful number, since it uses less digits than its factorization.

25700725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028039 (or 1028034 counting only the distinct ones).

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

The square root of 25700725 is about 5069.5882475799. The cubic root of 25700725 is about 295.1085495385.

The spelling of 25700725 in words is "twenty-five million, seven hundred thousand, seven hundred twenty-five".