25523044552240 has 40 divisors (see below), whose sum is σ = 61387322678640. Its totient is φ = 9857175826176.

The previous prime is 25523044552189. The next prime is 25523044552261. The reversal of 25523044552240 is 4225544032552.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5500653834 + ... + 5500658473.

It is an arithmetic number, because the mean of its divisors is an integer number (1534683066966).

Almost surely, 2^{25523044552240} is an apocalyptic number.

25523044552240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25523044552240 is an abundant number, since it is smaller than the sum of its proper divisors (35864278126400).

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

25523044552240 is a wasteful number, since it uses less digits than its factorization.

25523044552240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001312349 (or 11001312343 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 43.

Adding to 25523044552240 its reverse (4225544032552), we get a palindrome (29748588584792).

The spelling of 25523044552240 in words is "twenty-five trillion, five hundred twenty-three billion, forty-four million, five hundred fifty-two thousand, two hundred forty".