25010161 has 4 divisors (see below), whose sum is σ = 27283824. Its totient is φ = 22736500.

The previous prime is 25010143. The next prime is 25010173. The reversal of 25010161 is 16101052.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25010161 - 2⁷ = 25010033 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25010191) 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, 1136815 + ... + 1136836.

It is an arithmetic number, because the mean of its divisors is an integer number (6820956).

Almost surely, 2^25010161 is an apocalyptic number.

It is an amenable number.

25010161 is a deficient number, since it is larger than the sum of its proper divisors (2273663).

25010161 is a wasteful number, since it uses less digits than its factorization.

25010161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273662.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 25010161 is about 5001.0159967751. The cubic root of 25010161 is about 292.4413830478.

The spelling of 25010161 in words is "twenty-five million, ten thousand, one hundred sixty-one".