25871534 has 12 divisors (see below), whose sum is σ = 42022656. Its totient is φ = 11940552.

The previous prime is 25871513. The next prime is 25871543. The reversal of 25871534 is 43517852.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25871494 and 25871503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37934 + ... + 38609.

It is an arithmetic number, because the mean of its divisors is an integer number (3501888).

Almost surely, 2^25871534 is an apocalyptic number.

25871534 is a deficient number, since it is larger than the sum of its proper divisors (16151122).

25871534 is a wasteful number, since it uses less digits than its factorization.

25871534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76571 (or 76558 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 25871534 is about 5086.4067867209. The cubic root of 25871534 is about 295.7608779157.

The spelling of 25871534 in words is "twenty-five million, eight hundred seventy-one thousand, five hundred thirty-four".