25245522122509 has 8 divisors (see below), whose sum is σ = 27531630748160. Its totient is φ = 23008577123376.

The previous prime is 25245522122503. The next prime is 25245522122531. The reversal of 25245522122509 is 90522122554252.

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

It is not a de Polignac number, because 25245522122509 - 2²⁹ = 25244985251597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25245522122503) 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, 12290905557 + ... + 12290907610.

It is an arithmetic number, because the mean of its divisors is an integer number (3441453843520).

Almost surely, 2^{25245522122509} is an apocalyptic number.

It is an amenable number.

25245522122509 is a deficient number, since it is larger than the sum of its proper divisors (2286108625651).

25245522122509 is a wasteful number, since it uses less digits than its factorization.

25245522122509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24581813259.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 25245522122509 in words is "twenty-five trillion, two hundred forty-five billion, five hundred twenty-two million, one hundred twenty-two thousand, five hundred nine".