25626040 has 64 divisors (see below), whose sum is σ = 63504000. Its totient is φ = 9229440.

The previous prime is 25626019. The next prime is 25626043. The reversal of 25626040 is 4062652.

It is a junction number, because it is equal to n+sod(n) for n = 25625996 and 25626014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25626043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60951 + ... + 61369.

It is an arithmetic number, because the mean of its divisors is an integer number (992250).

Almost surely, 2^25626040 is an apocalyptic number.

25626040 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 25626040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31752000).

25626040 is an abundant number, since it is smaller than the sum of its proper divisors (37877960).

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

25626040 is a wasteful number, since it uses less digits than its factorization.

25626040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 25626040 is about 5062.2169056649. The cubic root of 25626040 is about 294.8224153825.

Adding to 25626040 its reverse (4062652), we get a palindrome (29688692).

The spelling of 25626040 in words is "twenty-five million, six hundred twenty-six thousand, forty".