25378616 has 8 divisors (see below), whose sum is σ = 47584920. Its totient is φ = 12689304.

The previous prime is 25378609. The next prime is 25378627. The reversal of 25378616 is 61687352.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25378616.

It is a congruent 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 as a sum of consecutive naturals, namely, 1586156 + ... + 1586171.

It is an arithmetic number, because the mean of its divisors is an integer number (5948115).

Almost surely, 2^25378616 is an apocalyptic number.

It is an amenable number.

25378616 is a deficient number, since it is larger than the sum of its proper divisors (22206304).

25378616 is a wasteful number, since it uses less digits than its factorization.

25378616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172333 (or 3172329 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 25378616 is about 5037.7193252503. The cubic root of 25378616 is about 293.8704907241.

The spelling of 25378616 in words is "twenty-five million, three hundred seventy-eight thousand, six hundred sixteen".