25385117 has 4 divisors (see below), whose sum is σ = 25494300. Its totient is φ = 25275936.

The previous prime is 25385099. The next prime is 25385137. The reversal of 25385117 is 71158352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17926756 + 7458361 = 4234^2 + 2731^2 .

It is a cyclic number.

It is not a de Polignac number, because 25385117 - 2⁸ = 25384861 is a prime.

It is a super-3 number, since 3×25385117³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25385137) 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, 54242 + ... + 54707.

It is an arithmetic number, because the mean of its divisors is an integer number (6373575).

Almost surely, 2^25385117 is an apocalyptic number.

It is an amenable number.

25385117 is a deficient number, since it is larger than the sum of its proper divisors (109183).

25385117 is a wasteful number, since it uses less digits than its factorization.

25385117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109182.

The product of its digits is 8400, while the sum is 32.

The square root of 25385117 is about 5038.3645163882. The cubic root of 25385117 is about 293.8955812565.

The spelling of 25385117 in words is "twenty-five million, three hundred eighty-five thousand, one hundred seventeen".