25334278216 has 48 divisors (see below), whose sum is σ = 53989947900. Its totient is φ = 11077319808.

The previous prime is 25334278213. The next prime is 25334278217. The reversal of 25334278216 is 61287243352.

It can be written as a sum of positive squares in 2 ways, for example, as 25073455716 + 260822500 = 158346^2 + 16150^2 .

It is not an unprimeable number, because it can be changed into a prime (25334278213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299851 + ... + 374938.

Almost surely, 2^25334278216 is an apocalyptic number.

25334278216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25334278216 is an abundant number, since it is smaller than the sum of its proper divisors (28655669684).

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

25334278216 is a wasteful number, since it uses less digits than its factorization.

25334278216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674846 (or 674823 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The spelling of 25334278216 in words is "twenty-five billion, three hundred thirty-four million, two hundred seventy-eight thousand, two hundred sixteen".