25262161 has 8 divisors (see below), whose sum is σ = 26493480. Its totient is φ = 24054912.

The previous prime is 25262147. The next prime is 25262177. The reversal of 25262161 is 16126252.

It can be written as a sum of positive squares in 4 ways, for example, as 8737936 + 16524225 = 2956^2 + 4065^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25262161 - 2⁷ = 25262033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25262131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3850 + ... + 8083.

It is an arithmetic number, because the mean of its divisors is an integer number (3311685).

Almost surely, 2^25262161 is an apocalyptic number.

It is an amenable number.

25262161 is a deficient number, since it is larger than the sum of its proper divisors (1231319).

25262161 is a wasteful number, since it uses less digits than its factorization.

25262161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035.

The product of its digits is 1440, while the sum is 25.

The square root of 25262161 is about 5026.1477296236. The cubic root of 25262161 is about 293.4203063668.

The spelling of 25262161 in words is "twenty-five million, two hundred sixty-two thousand, one hundred sixty-one".