25761161 has 8 divisors (see below), whose sum is σ = 26655048. Its totient is φ = 24880000.

The previous prime is 25761157. The next prime is 25761181. The reversal of 25761161 is 16116752.

It can be written as a sum of positive squares in 4 ways, for example, as 309136 + 25452025 = 556^2 + 5045^2 .

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 25761161 - 2² = 25761157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25761181) 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, 1031 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (3331881).

Almost surely, 2^25761161 is an apocalyptic number.

It is an amenable number.

25761161 is a deficient number, since it is larger than the sum of its proper divisors (893887).

25761161 is a wasteful number, since it uses less digits than its factorization.

25761161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6363.

The product of its digits is 2520, while the sum is 29.

The square root of 25761161 is about 5075.5453894138. The cubic root of 25761161 is about 295.3396872276.

The spelling of 25761161 in words is "twenty-five million, seven hundred sixty-one thousand, one hundred sixty-one".