25285161 has 32 divisors (see below), whose sum is σ = 38218752. Its totient is φ = 14736960.

The previous prime is 25285133. The next prime is 25285163. The reversal of 25285161 is 16158252.

It is not a de Polignac number, because 25285161 - 2¹¹ = 25283113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25285163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146071 + ... + 146243.

It is an arithmetic number, because the mean of its divisors is an integer number (1194336).

Almost surely, 2^25285161 is an apocalyptic number.

It is an amenable number.

25285161 is a deficient number, since it is larger than the sum of its proper divisors (12933591).

25285161 is a wasteful number, since it uses less digits than its factorization.

25285161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its digits is 4800, while the sum is 30.

The square root of 25285161 is about 5028.4352436916. The cubic root of 25285161 is about 293.5093277820.

The spelling of 25285161 in words is "twenty-five million, two hundred eighty-five thousand, one hundred sixty-one".