25681358052 has 144 divisors (see below), whose sum is σ = 76108032000. Its totient is φ = 7298444160.

The previous prime is 25681358041. The next prime is 25681358063. The reversal of 25681358052 is 25085318652.

25681358052 is a `hidden beast` number, since 2 + 5 + 6 + 8 + 13 + 580 + 52 = 666.

It is an interprime number because it is at equal distance from previous prime (25681358041) and next prime (25681358063).

It is a junction number, because it is equal to n+sod(n) for n = 25681357989 and 25681358007.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2353024 + ... + 2363912.

It is an arithmetic number, because the mean of its divisors is an integer number (528528000).

Almost surely, 2^25681358052 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 25681358052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38054016000).

25681358052 is an abundant number, since it is smaller than the sum of its proper divisors (50426673948).

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

25681358052 is a wasteful number, since it uses less digits than its factorization.

25681358052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111 (or 11092 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 25681358052 in words is "twenty-five billion, six hundred eighty-one million, three hundred fifty-eight thousand, fifty-two".