25349394616 has 192 divisors, whose sum is σ = 65407910400. Its totient is φ = 9086660352.

The previous prime is 25349394607. The next prime is 25349394649. The reversal of 25349394616 is 61649394352.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 2221261 + ... + 2232643.

It is an arithmetic number, because the mean of its divisors is an integer number (340666200).

Almost surely, 2^25349394616 is an apocalyptic number.

25349394616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25349394616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32703955200).

25349394616 is an abundant number, since it is smaller than the sum of its proper divisors (40058515784).

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

25349394616 is a wasteful number, since it uses less digits than its factorization.

25349394616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11458 (or 11447 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 52.

The spelling of 25349394616 in words is "twenty-five billion, three hundred forty-nine million, three hundred ninety-four thousand, six hundred sixteen".