25980725 has 6 divisors (see below), whose sum is σ = 32216130. Its totient is φ = 20784560.

The previous prime is 25980719. The next prime is 25980727. The reversal of 25980725 is 52708952.

It can be written as a sum of positive squares in 3 ways, for example, as 649636 + 25331089 = 806^2 + 5033^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25980725 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25980727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 519590 + ... + 519639.

It is an arithmetic number, because the mean of its divisors is an integer number (5369355).

Almost surely, 2^25980725 is an apocalyptic number.

25980725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25980725 is a deficient number, since it is larger than the sum of its proper divisors (6235405).

25980725 is a wasteful number, since it uses less digits than its factorization.

25980725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039239 (or 1039234 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 25980725 is about 5097.1290939116. The cubic root of 25980725 is about 296.1763809070.

The spelling of 25980725 in words is "twenty-five million, nine hundred eighty thousand, seven hundred twenty-five".