25901897 has 16 divisors (see below), whose sum is σ = 31489920. Its totient is φ = 20798208.

The previous prime is 25901891. The next prime is 25901899. The reversal of 25901897 is 79810952.

It is not a de Polignac number, because 25901897 - 2¹⁰ = 25900873 is a prime.

It is a super-3 number, since 3×25901897³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

25901897 is a modest number, since divided by 1897 gives 259 as remainder.

It is not an unprimeable number, because it can be changed into a prime (25901891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36179 + ... + 36887.

It is an arithmetic number, because the mean of its divisors is an integer number (1968120).

Almost surely, 2^25901897 is an apocalyptic number.

It is an amenable number.

25901897 is a deficient number, since it is larger than the sum of its proper divisors (5588023).

25901897 is a wasteful number, since it uses less digits than its factorization.

25901897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 25901897 is about 5089.3906315000. The cubic root of 25901897 is about 295.8765349767.

The spelling of 25901897 in words is "twenty-five million, nine hundred one thousand, eight hundred ninety-seven".