25988089489 has 8 divisors (see below), whose sum is σ = 26710132968. Its totient is φ = 25267080960.

The previous prime is 25988089447. The next prime is 25988089513. The reversal of 25988089489 is 98498088952.

It can be written as a sum of positive squares in 4 ways, for example, as 4383499264 + 21604590225 = 66208^2 + 146985^2 .

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

It is not a de Polignac number, because 25988089489 - 2¹⁷ = 25987958417 is a prime.

It is a super-2 number, since 2×25988089489² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25988089789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207682 + ... + 308395.

It is an arithmetic number, because the mean of its divisors is an integer number (3338766621).

Almost surely, 2^25988089489 is an apocalyptic number.

It is an amenable number.

25988089489 is a deficient number, since it is larger than the sum of its proper divisors (722043479).

25988089489 is a wasteful number, since it uses less digits than its factorization.

25988089489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517475.

The product of its (nonzero) digits is 119439360, while the sum is 70.

The spelling of 25988089489 in words is "twenty-five billion, nine hundred eighty-eight million, eighty-nine thousand, four hundred eighty-nine".