25321612352 has 56 divisors (see below), whose sum is σ = 50607733176. Its totient is φ = 12570329088.

The previous prime is 25321612321. The next prime is 25321612357.

25321612352 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 7529536 + 25314082816 = 2744^2 + 159104^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (25321612357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7323008 + ... + 7326464.

It is an arithmetic number, because the mean of its divisors is an integer number (903709521).

Almost surely, 2^25321612352 is an apocalyptic number.

It is an amenable number.

25321612352 is a deficient number, since it is larger than the sum of its proper divisors (25286120824).

25321612352 is a wasteful number, since it uses less digits than its factorization.

25321612352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255 (or 4245 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The spelling of 25321612352 in words is "twenty-five billion, three hundred twenty-one million, six hundred twelve thousand, three hundred fifty-two".