25613361 has 16 divisors (see below), whose sum is σ = 38972800. Its totient is φ = 16613424.

The previous prime is 25613333. The next prime is 25613377. The reversal of 25613361 is 16331652.

It is not a de Polignac number, because 25613361 - 2⁹ = 25612849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25613381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11821 + ... + 13818.

It is an arithmetic number, because the mean of its divisors is an integer number (2435800).

Almost surely, 2^25613361 is an apocalyptic number.

It is an amenable number.

25613361 is a deficient number, since it is larger than the sum of its proper divisors (13359439).

25613361 is a wasteful number, since it uses less digits than its factorization.

25613361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25685 (or 25679 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 25613361 is about 5060.9644337814. The cubic root of 25613361 is about 294.7737842496.

The spelling of 25613361 in words is "twenty-five million, six hundred thirteen thousand, three hundred sixty-one".