25260340 has 48 divisors (see below), whose sum is σ = 61552512. Its totient is φ = 8528256.

The previous prime is 25260311. The next prime is 25260341. The reversal of 25260340 is 4306252.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25260341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8034 + ... + 10726.

It is an arithmetic number, because the mean of its divisors is an integer number (1282344).

Almost surely, 2^25260340 is an apocalyptic number.

25260340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25260340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30776256).

25260340 is an abundant number, since it is smaller than the sum of its proper divisors (36292172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25260340 is a wasteful number, since it uses less digits than its factorization.

25260340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 25260340 is about 5025.9665737050. The cubic root of 25260340 is about 293.4132558851.

Adding to 25260340 its reverse (4306252), we get a palindrome (29566592).

It can be divided in two parts, 25260 and 340, that added together give a square (25600 = 160²).

The spelling of 25260340 in words is "twenty-five million, two hundred sixty thousand, three hundred forty".