25442265888 has 270 divisors, whose sum is σ = 81361109907. Its totient is φ = 7795906560.

The previous prime is 25442265881. The next prime is 25442265889. The reversal of 25442265888 is 88856224452.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

25442265888 is a `hidden beast` number, since 2 + 54 + 4 + 2 + 2 + 6 + 588 + 8 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 9539038224 + 15903227664 = 97668^2 + 126108^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112788.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (25442265881) by changing a digit.

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 44 ways as a sum of consecutive naturals, for example, 105569448 + ... + 105569688.

Almost surely, 2^25442265888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25442265888

25442265888 is an abundant number, since it is smaller than the sum of its proper divisors (55918844019).

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

25442265888 is an equidigital number, since it uses as much as digits as its factorization.

25442265888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 259 counting only the distinct ones).

The product of its digits is 9830400, while the sum is 54.

The spelling of 25442265888 in words is "twenty-five billion, four hundred forty-two million, two hundred sixty-five thousand, eight hundred eighty-eight".