25887083989 has 8 divisors (see below), whose sum is σ = 28097914880. Its totient is φ = 23707612656.

The previous prime is 25887083977. The next prime is 25887084019. The reversal of 25887083989 is 98938078852.

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

It is not a de Polignac number, because 25887083989 - 2⁹ = 25887083477 is a prime.

It is a super-2 number, since 2×25887083989² (a number of 22 digits) 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 (25887083939) 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, 7838169 + ... + 7841470.

It is an arithmetic number, because the mean of its divisors is an integer number (3512239360).

Almost surely, 2^25887083989 is an apocalyptic number.

It is an amenable number.

25887083989 is a deficient number, since it is larger than the sum of its proper divisors (2210830891).

25887083989 is a wasteful number, since it uses less digits than its factorization.

25887083989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15679779.

The product of its (nonzero) digits is 69672960, while the sum is 67.

The spelling of 25887083989 in words is "twenty-five billion, eight hundred eighty-seven million, eighty-three thousand, nine hundred eighty-nine".