25001161 has 8 divisors (see below), whose sum is σ = 26988480. Its totient is φ = 23088912.

The previous prime is 25001153. The next prime is 25001167. The reversal of 25001161 is 16110052.

It is a happy number.

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 25001161 - 2³ = 25001153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25001167) 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, 18075 + ... + 19408.

It is an arithmetic number, because the mean of its divisors is an integer number (3373560).

Almost surely, 2^25001161 is an apocalyptic number.

It is an amenable number.

25001161 is a deficient number, since it is larger than the sum of its proper divisors (1987319).

25001161 is a wasteful number, since it uses less digits than its factorization.

25001161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37535.

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

The square root of 25001161 is about 5000.1160986521. The cubic root of 25001161 is about 292.4063001307.

The spelling of 25001161 in words is "twenty-five million, one thousand, one hundred sixty-one".