25450117 has 16 divisors (see below), whose sum is σ = 32591232. Its totient is φ = 19293120.

The previous prime is 25450093. The next prime is 25450141. The reversal of 25450117 is 71105452.

It is an interprime number because it is at equal distance from previous prime (25450093) and next prime (25450141).

It is not a de Polignac number, because 25450117 - 2⁷ = 25449989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25450091 and 25450100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25450157) 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, 1618 + ... + 7315.

It is an arithmetic number, because the mean of its divisors is an integer number (2036952).

Almost surely, 2^25450117 is an apocalyptic number.

It is an amenable number.

25450117 is a deficient number, since it is larger than the sum of its proper divisors (7141115).

25450117 is a wasteful number, since it uses less digits than its factorization.

25450117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8988.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 25450117 is about 5044.8108983390. The cubic root of 25450117 is about 294.1462127714.

Adding to 25450117 its reverse (71105452), we get a palindrome (96555569).

The spelling of 25450117 in words is "twenty-five million, four hundred fifty thousand, one hundred seventeen".