25378117 has 4 divisors (see below), whose sum is σ = 25546336. Its totient is φ = 25209900.

The previous prime is 25378109. The next prime is 25378121. The reversal of 25378117 is 71187352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25378117 - 2³ = 25378109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25378147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83883 + ... + 84184.

It is an arithmetic number, because the mean of its divisors is an integer number (6386584).

Almost surely, 2^25378117 is an apocalyptic number.

25378117 is the 2909-th hex number.

It is an amenable number.

25378117 is a deficient number, since it is larger than the sum of its proper divisors (168219).

25378117 is a wasteful number, since it uses less digits than its factorization.

25378117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168218.

The product of its digits is 11760, while the sum is 34.

The square root of 25378117 is about 5037.6697986271. The cubic root of 25378117 is about 293.8685646625.

The spelling of 25378117 in words is "twenty-five million, three hundred seventy-eight thousand, one hundred seventeen".