25078163 has 16 divisors (see below), whose sum is σ = 28449792. Its totient is φ = 21900000.

The previous prime is 25078133. The next prime is 25078171. The reversal of 25078163 is 36187052.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25078163 - 2⁶ = 25078099 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25078133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85445 + ... + 85737.

It is an arithmetic number, because the mean of its divisors is an integer number (1778112).

Almost surely, 2^25078163 is an apocalyptic number.

25078163 is a deficient number, since it is larger than the sum of its proper divisors (3371629).

25078163 is a wasteful number, since it uses less digits than its factorization.

25078163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 25078163 is about 5007.8102000775. The cubic root of 25078163 is about 292.7061901181.

Subtracting 25078163 from its reverse (36187052), we obtain a square (11108889 = 3333²).

The spelling of 25078163 in words is "twenty-five million, seventy-eight thousand, one hundred sixty-three".