25426340 has 12 divisors (see below), whose sum is σ = 53395356. Its totient is φ = 10170528.

The previous prime is 25426327. The next prime is 25426343. The reversal of 25426340 is 4362452.

It can be written as a sum of positive squares in 2 ways, for example, as 6832996 + 18593344 = 2614^2 + 4312^2 .

It is not an unprimeable number, because it can be changed into a prime (25426343) 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, 635639 + ... + 635678.

It is an arithmetic number, because the mean of its divisors is an integer number (4449613).

Almost surely, 2^25426340 is an apocalyptic number.

25426340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25426340 is an abundant number, since it is smaller than the sum of its proper divisors (27969016).

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

25426340 is a wasteful number, since it uses less digits than its factorization.

25426340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271326 (or 1271324 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 25426340 is about 5042.4537677603. The cubic root of 25426340 is about 294.0545813174.

Adding to 25426340 its reverse (4362452), we get a palindrome (29788792).

The spelling of 25426340 in words is "twenty-five million, four hundred twenty-six thousand, three hundred forty".