25141615656 has 128 divisors (see below), whose sum is σ = 69678403200. Its totient is φ = 7523532800.

The previous prime is 25141615637. The next prime is 25141615657. The reversal of 25141615656 is 65651614152.

It is not an unprimeable number, because it can be changed into a prime (25141615657) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 969256 + ... + 994856.

It is an arithmetic number, because the mean of its divisors is an integer number (544362525).

Almost surely, 2^25141615656 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 25141615656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34839201600).

25141615656 is an abundant number, since it is smaller than the sum of its proper divisors (44536787544).

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

25141615656 is a wasteful number, since it uses less digits than its factorization.

25141615656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25739 (or 25735 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The spelling of 25141615656 in words is "twenty-five billion, one hundred forty-one million, six hundred fifteen thousand, six hundred fifty-six".