25871901 has 16 divisors (see below), whose sum is σ = 39613440. Its totient is φ = 14854320.

The previous prime is 25871899. The next prime is 25871921. The reversal of 25871901 is 10917852.

It is not a de Polignac number, because 25871901 - 2¹ = 25871899 is a prime.

It is a super-2 number, since 2×25871901² = 1338710522707602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25871921) 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, 20005 + ... + 21258.

It is an arithmetic number, because the mean of its divisors is an integer number (2475840).

Almost surely, 2^25871901 is an apocalyptic number.

It is an amenable number.

25871901 is a deficient number, since it is larger than the sum of its proper divisors (13741539).

25871901 is a wasteful number, since it uses less digits than its factorization.

25871901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41296.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 25871901 is about 5086.4428631412. The cubic root of 25871901 is about 295.7622764120.

The spelling of 25871901 in words is "twenty-five million, eight hundred seventy-one thousand, nine hundred one".