25722616064 has 18 divisors (see below), whose sum is σ = 51344753670. Its totient is φ = 12861307904.

The previous prime is 25722616013. The next prime is 25722616093. The reversal of 25722616064 is 46061622752.

It can be written as a sum of positive squares in only one way, i.e., 14189574400 + 11533041664 = 119120^2 + 107392^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50239229 + ... + 50239740.

It is an arithmetic number, because the mean of its divisors is an integer number (2852486315).

Almost surely, 2^25722616064 is an apocalyptic number.

It is an amenable number.

25722616064 is a deficient number, since it is larger than the sum of its proper divisors (25622137606).

25722616064 is an equidigital number, since it uses as much as digits as its factorization.

25722616064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100478985 (or 100478971 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 25722616064 in words is "twenty-five billion, seven hundred twenty-two million, six hundred sixteen thousand, sixty-four".