25925490209489 has 8 divisors (see below), whose sum is σ = 28336471504320. Its totient is φ = 23574039317136.

The previous prime is 25925490209453. The next prime is 25925490209491. The reversal of 25925490209489 is 98490209452952.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25925490209489 is a prime.

It is a super-2 number, since 2×25925490209489² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25925490209449) 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, 14882599709 + ... + 14882601450.

It is an arithmetic number, because the mean of its divisors is an integer number (3542058938040).

Almost surely, 2^{25925490209489} is an apocalyptic number.

It is an amenable number.

25925490209489 is a deficient number, since it is larger than the sum of its proper divisors (2410981294831).

25925490209489 is a wasteful number, since it uses less digits than its factorization.

25925490209489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29765201239.

The product of its (nonzero) digits is 167961600, while the sum is 68.

The spelling of 25925490209489 in words is "twenty-five trillion, nine hundred twenty-five billion, four hundred ninety million, two hundred nine thousand, four hundred eighty-nine".