25705417 has 16 divisors (see below), whose sum is σ = 27715072. Its totient is φ = 23794560.

The previous prime is 25705403. The next prime is 25705429. The reversal of 25705417 is 71450752.

It is a cyclic number.

It is not a de Polignac number, because 25705417 - 2⁷ = 25705289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (25705457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83578 + ... + 83884.

It is an arithmetic number, because the mean of its divisors is an integer number (1732192).

Almost surely, 2^25705417 is an apocalyptic number.

It is an amenable number.

25705417 is a deficient number, since it is larger than the sum of its proper divisors (2009655).

25705417 is a wasteful number, since it uses less digits than its factorization.

25705417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 25705417 is about 5070.0509859369. The cubic root of 25705417 is about 295.1265070742.

The spelling of 25705417 in words is "twenty-five million, seven hundred five thousand, four hundred seventeen".