25700577056 has 96 divisors (see below), whose sum is σ = 63196060032. Its totient is φ = 9995304960.

The previous prime is 25700577053. The next prime is 25700577079. The reversal of 25700577056 is 65077500752.

It is a happy number.

It is a super-2 number, since 2×25700577056² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 25700576998 and 25700577016.

It is not an unprimeable number, because it can be changed into a prime (25700577053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412690 + ... + 1430766.

It is an arithmetic number, because the mean of its divisors is an integer number (658292292).

Almost surely, 2^25700577056 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 25700577056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31598030016).

25700577056 is an abundant number, since it is smaller than the sum of its proper divisors (37495482976).

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

25700577056 is a wasteful number, since it uses less digits than its factorization.

25700577056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18682 (or 18674 counting only the distinct ones).

The product of its (nonzero) digits is 514500, while the sum is 44.

The spelling of 25700577056 in words is "twenty-five billion, seven hundred million, five hundred seventy-seven thousand, fifty-six".