25255117 has 4 divisors (see below), whose sum is σ = 25330396. Its totient is φ = 25179840.

The previous prime is 25255099. The next prime is 25255129. The reversal of 25255117 is 71155252.

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 5354596 + 19900521 = 2314^2 + 4461^2 .

It is a cyclic number.

It is not a de Polignac number, because 25255117 - 2¹⁵ = 25222349 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 (25255187) 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, 37134 + ... + 37807.

It is an arithmetic number, because the mean of its divisors is an integer number (6332599).

Almost surely, 2^25255117 is an apocalyptic number.

It is an amenable number.

25255117 is a deficient number, since it is larger than the sum of its proper divisors (75279).

25255117 is an equidigital number, since it uses as much as digits as its factorization.

25255117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75278.

The product of its digits is 3500, while the sum is 28.

The square root of 25255117 is about 5025.4469452975. The cubic root of 25255117 is about 293.3930317832.

The spelling of 25255117 in words is "twenty-five million, two hundred fifty-five thousand, one hundred seventeen".