25613887 has 8 divisors (see below), whose sum is σ = 27725600. Its totient is φ = 23522400.

The previous prime is 25613867. The next prime is 25613897. The reversal of 25613887 is 78831652.

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 25613887 - 2⁷ = 25613759 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 (25613837) 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, 2364 + ... + 7537.

It is an arithmetic number, because the mean of its divisors is an integer number (3465700).

Almost surely, 2^25613887 is an apocalyptic number.

25613887 is a deficient number, since it is larger than the sum of its proper divisors (2111713).

25613887 is a wasteful number, since it uses less digits than its factorization.

25613887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10113.

The product of its digits is 80640, while the sum is 40.

The square root of 25613887 is about 5061.0163998944. The cubic root of 25613887 is about 294.7758020760.

The spelling of 25613887 in words is "twenty-five million, six hundred thirteen thousand, eight hundred eighty-seven".