25250481216 has 105 divisors (see below), whose sum is σ = 74884266919. Its totient is φ = 8413013376.

The previous prime is 25250481187. The next prime is 25250481241. The reversal of 25250481216 is 61218405252.

The square root of 25250481216 is 158904.

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

25250481216 is a `hidden beast` number, since 2 + 52 + 504 + 81 + 21 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is an unprimeable number.

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 14 ways as a sum of consecutive naturals, for example, 11439985 + ... + 11442191.

Almost surely, 2^25250481216 is an apocalyptic number.

25250481216 is the 158904-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25250481216

25250481216 is an abundant number, since it is smaller than the sum of its proper divisors (49633785703).

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

25250481216 is an frugal number, since it uses more digits than its factorization.

25250481216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Multiplying 25250481216 by its sum of digits (36), we get a square (909017323776 = 953424²).

25250481216 divided by its sum of digits (36) gives a square (701402256 = 26484²).

Adding to 25250481216 its reverse (61218405252), we get a palindrome (86468886468).

The spelling of 25250481216 in words is "twenty-five billion, two hundred fifty million, four hundred eighty-one thousand, two hundred sixteen".