25305955060 has 48 divisors (see below), whose sum is σ = 55024220160. Its totient is φ = 9764585600.

The previous prime is 25305955027. The next prime is 25305955067. The reversal of 25305955060 is 6055950352.

It is a happy number.

It is a super-2 number, since 2×25305955060² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305955067) 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 15 ways as a sum of consecutive naturals, for example, 648627 + ... + 686533.

It is an arithmetic number, because the mean of its divisors is an integer number (1146337920).

Almost surely, 2^25305955060 is an apocalyptic number.

25305955060 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 25305955060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27512110080).

25305955060 is an abundant number, since it is smaller than the sum of its proper divisors (29718265100).

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

25305955060 is a wasteful number, since it uses less digits than its factorization.

25305955060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39096 (or 39094 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 40.

The spelling of 25305955060 in words is "twenty-five billion, three hundred five million, nine hundred fifty-five thousand, sixty".