25155887 has 8 divisors (see below), whose sum is σ = 25635456. Its totient is φ = 24679512.

The previous prime is 25155881. The next prime is 25155899. The reversal of 25155887 is 78855152.

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 25155887 - 2¹⁰ = 25154863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25155881) 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, 19958 + ... + 21180.

It is an arithmetic number, because the mean of its divisors is an integer number (3204432).

Almost surely, 2^25155887 is an apocalyptic number.

25155887 is a deficient number, since it is larger than the sum of its proper divisors (479569).

25155887 is a wasteful number, since it uses less digits than its factorization.

25155887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597.

The product of its digits is 112000, while the sum is 41.

The square root of 25155887 is about 5015.5644747127. The cubic root of 25155887 is about 293.0082701017.

The spelling of 25155887 in words is "twenty-five million, one hundred fifty-five thousand, eight hundred eighty-seven".