25522740 has 36 divisors (see below), whose sum is σ = 77419524. Its totient is φ = 6806016.

The previous prime is 25522699. The next prime is 25522741. The reversal of 25522740 is 4722552.

It can be written as a sum of positive squares in 2 ways, for example, as 9217296 + 16305444 = 3036^2 + 4038^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25522741) 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 11 ways as a sum of consecutive naturals, for example, 70717 + ... + 71076.

Almost surely, 2^25522740 is an apocalyptic number.

25522740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25522740 is an abundant number, since it is smaller than the sum of its proper divisors (51896784).

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

25522740 is a wasteful number, since it uses less digits than its factorization.

25522740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141808 (or 141803 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 25522740 is about 5052.0035629441. The cubic root of 25522740 is about 294.4257333415.

It can be divided in two parts, 25522 and 740, that added together give a palindrome (26262).

The spelling of 25522740 in words is "twenty-five million, five hundred twenty-two thousand, seven hundred forty".