25051986998416 has 45 divisors (see below), whose sum is σ = 56463148806969. Its totient is φ = 10736505794112.

The previous prime is 25051986998413. The next prime is 25051986998477. The reversal of 25051986998416 is 61489968915052.

The square root of 25051986998416 is 5005196.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15997280115600 + 9054706882816 = 3999660^2 + 3009104^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25051986998413) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 140056110 + ... + 140234866.

Almost surely, 2^{25051986998416} is an apocalyptic number.

25051986998416 is the 5005196-th square number.

It is an amenable number.

25051986998416 is an abundant number, since it is smaller than the sum of its proper divisors (31411161808553).

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

25051986998416 is an frugal number, since it uses more digits than its factorization.

25051986998416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357536 (or 178766 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 73.

The spelling of 25051986998416 in words is "twenty-five trillion, fifty-one billion, nine hundred eighty-six million, nine hundred ninety-eight thousand, four hundred sixteen".