25870855 has 8 divisors (see below), whose sum is σ = 32871312. Its totient is φ = 19479168.

The previous prime is 25870853. The next prime is 25870861. The reversal of 25870855 is 55807852.

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

It is a cyclic number.

It is not a de Polignac number, because 25870855 - 2¹ = 25870853 is a prime.

It is a super-2 number, since 2×25870855² = 1338602276862050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25870853) 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, 152097 + ... + 152266.

It is an arithmetic number, because the mean of its divisors is an integer number (4108914).

Almost surely, 2^25870855 is an apocalyptic number.

25870855 is a deficient number, since it is larger than the sum of its proper divisors (7000457).

25870855 is a wasteful number, since it uses less digits than its factorization.

25870855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304385.

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 25870855 is about 5086.3400397535. The cubic root of 25870855 is about 295.7582904723.

The spelling of 25870855 in words is "twenty-five million, eight hundred seventy thousand, eight hundred fifty-five".