25377265 has 4 divisors (see below), whose sum is σ = 30452724. Its totient is φ = 20301808.

The previous prime is 25377263. The next prime is 25377269. The reversal of 25377265 is 56277352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16032016 + 9345249 = 4004^2 + 3057^2 .

It is a cyclic number.

It is not a de Polignac number, because 25377265 - 2¹ = 25377263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25377263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2537722 + ... + 2537731.

It is an arithmetic number, because the mean of its divisors is an integer number (7613181).

Almost surely, 2^25377265 is an apocalyptic number.

It is an amenable number.

25377265 is a deficient number, since it is larger than the sum of its proper divisors (5075459).

25377265 is an equidigital number, since it uses as much as digits as its factorization.

25377265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075458.

The product of its digits is 88200, while the sum is 37.

The square root of 25377265 is about 5037.5852350109. The cubic root of 25377265 is about 293.8652760179.

The spelling of 25377265 in words is "twenty-five million, three hundred seventy-seven thousand, two hundred sixty-five".