25245765 has 48 divisors (see below), whose sum is σ = 47180016. Its totient is φ = 12441600.

The previous prime is 25245763. The next prime is 25245767. The reversal of 25245765 is 56754252.

It is an interprime number because it is at equal distance from previous prime (25245763) and next prime (25245767).

It can be written as a sum of positive squares in 8 ways, for example, as 1887876 + 23357889 = 1374^2 + 4833^2 .

It is not a de Polignac number, because 25245765 - 2¹ = 25245763 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25245761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46395 + ... + 46935.

It is an arithmetic number, because the mean of its divisors is an integer number (982917).

Almost surely, 2^25245765 is an apocalyptic number.

It is an amenable number.

25245765 is a deficient number, since it is larger than the sum of its proper divisors (21934251).

25245765 is a wasteful number, since it uses less digits than its factorization.

25245765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 627 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 25245765 is about 5024.5163946394. The cubic root of 25245765 is about 293.3568127154.

The spelling of 25245765 in words is "twenty-five million, two hundred forty-five thousand, seven hundred sixty-five".