25555158840 has 192 divisors, whose sum is σ = 81734716800. Its totient is φ = 6374336256.

The previous prime is 25555158799. The next prime is 25555158847. The reversal of 25555158840 is 4885155552.

It is a super-2 number, since 2×25555158840² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25555158840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555158847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15706107 + ... + 15707733.

It is an arithmetic number, because the mean of its divisors is an integer number (425701650).

Almost surely, 2^25555158840 is an apocalyptic number.

25555158840 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 25555158840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40867358400).

25555158840 is an abundant number, since it is smaller than the sum of its proper divisors (56179557960).

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

25555158840 is a wasteful number, since it uses less digits than its factorization.

25555158840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826 (or 1739 counting only the distinct ones).

The product of its (nonzero) digits is 1600000, while the sum is 48.

The spelling of 25555158840 in words is "twenty-five billion, five hundred fifty-five million, one hundred fifty-eight thousand, eight hundred forty".