25867869 has 8 divisors (see below), whose sum is σ = 35141472. Its totient is φ = 16919760.

The previous prime is 25867867. The next prime is 25867943. The reversal of 25867869 is 96876852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25867869 - 2¹ = 25867867 is a prime.

It is a super-2 number, since 2×25867869² = 1338293293202322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25867861) 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, 81187 + ... + 81504.

It is an arithmetic number, because the mean of its divisors is an integer number (4392684).

Almost surely, 2^25867869 is an apocalyptic number.

It is an amenable number.

25867869 is a deficient number, since it is larger than the sum of its proper divisors (9273603).

25867869 is a wasteful number, since it uses less digits than its factorization.

25867869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162747.

The product of its digits is 1451520, while the sum is 51.

The square root of 25867869 is about 5086.0464999840. The cubic root of 25867869 is about 295.7469112808.

The spelling of 25867869 in words is "twenty-five million, eight hundred sixty-seven thousand, eight hundred sixty-nine".