25552332416 has 32 divisors (see below), whose sum is σ = 54820812900. Its totient is φ = 11793383424.

The previous prime is 25552332401. The next prime is 25552332467. The reversal of 25552332416 is 61423325552.

It can be written as a sum of positive squares in 2 ways, for example, as 23135626816 + 2416705600 = 152104^2 + 49160^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 25552332416.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7676321 + ... + 7679648.

Almost surely, 2^25552332416 is an apocalyptic number.

25552332416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25552332416 is an abundant number, since it is smaller than the sum of its proper divisors (29268480484).

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

25552332416 is a wasteful number, since it uses less digits than its factorization.

25552332416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15355996 (or 15355984 counting only the distinct ones).

The product of its digits is 216000, while the sum is 38.

Adding to 25552332416 its reverse (61423325552), we get a palindrome (86975657968).

The spelling of 25552332416 in words is "twenty-five billion, five hundred fifty-two million, three hundred thirty-two thousand, four hundred sixteen".