25516295244 has 48 divisors (see below), whose sum is σ = 72167303040. Its totient is φ = 7732210320.

The previous prime is 25516295239. The next prime is 25516295261. The reversal of 25516295244 is 44259261552.

25516295244 is a `hidden beast` number, since 2 + 5 + 516 + 2 + 95 + 2 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 25516295244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10737994 + ... + 10740369.

It is an arithmetic number, because the mean of its divisors is an integer number (1503485480).

Almost surely, 2^25516295244 is an apocalyptic number.

It is an amenable number.

25516295244 is an abundant number, since it is smaller than the sum of its proper divisors (46651007796).

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

25516295244 is a wasteful number, since it uses less digits than its factorization.

25516295244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21478387 (or 21478379 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 25516295244 in words is "twenty-five billion, five hundred sixteen million, two hundred ninety-five thousand, two hundred forty-four".