25355030040 has 48 divisors (see below), whose sum is σ = 82403848800. Its totient is φ = 6761341248.

The previous prime is 25355030027. The next prime is 25355030081. The reversal of 25355030040 is 4003055352.

25355030040 is a `hidden beast` number, since 2 + 5 + 355 + 0 + 300 + 4 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25355029986 and 25355030013.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 35214960 + ... + 35215679.

It is an arithmetic number, because the mean of its divisors is an integer number (1716746850).

Almost surely, 2^25355030040 is an apocalyptic number.

25355030040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25355030040 is an abundant number, since it is smaller than the sum of its proper divisors (57048818760).

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

25355030040 is a wasteful number, since it uses less digits than its factorization.

25355030040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70430656 (or 70430649 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

Adding to 25355030040 its reverse (4003055352), we get a palindrome (29358085392).

The spelling of 25355030040 in words is "twenty-five billion, three hundred fifty-five million, thirty thousand, forty".