25070725 has 12 divisors (see below), whose sum is σ = 31398660. Its totient is φ = 19856000.

The previous prime is 25070711. The next prime is 25070741. The reversal of 25070725 is 52707052.

It can be written as a sum of positive squares in 6 ways, for example, as 676 + 25070049 = 26^2 + 5007^2 .

It is not a de Polignac number, because 25070725 - 2¹³ = 25062533 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25070693 and 25070702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2440 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (2616555).

Almost surely, 2^25070725 is an apocalyptic number.

25070725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25070725 is a deficient number, since it is larger than the sum of its proper divisors (6327935).

25070725 is a wasteful number, since it uses less digits than its factorization.

25070725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10040 (or 10035 counting only the distinct ones).

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

The square root of 25070725 is about 5007.0675050373. The cubic root of 25070725 is about 292.6772490839.

Adding to 25070725 its reverse (52707052), we get a palindrome (77777777).

The spelling of 25070725 in words is "twenty-five million, seventy thousand, seven hundred twenty-five".