25887489485 has 32 divisors (see below), whose sum is σ = 36521428608. Its totient is φ = 17366872320.

The previous prime is 25887489473. The next prime is 25887489487. The reversal of 25887489485 is 58498478852.

It is not a de Polignac number, because 25887489485 - 2¹⁰ = 25887488461 is a prime.

It is a super-2 number, since 2×25887489485² (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 (25887489487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1077059 + ... + 1100831.

It is an arithmetic number, because the mean of its divisors is an integer number (1141294644).

Almost surely, 2^25887489485 is an apocalyptic number.

It is an amenable number.

25887489485 is a deficient number, since it is larger than the sum of its proper divisors (10633939123).

25887489485 is a wasteful number, since it uses less digits than its factorization.

25887489485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25325.

The product of its digits is 206438400, while the sum is 68.

The spelling of 25887489485 in words is "twenty-five billion, eight hundred eighty-seven million, four hundred eighty-nine thousand, four hundred eighty-five".