25252530549 has 8 divisors (see below), whose sum is σ = 33698555232. Its totient is φ = 16820763120.

The previous prime is 25252530533. The next prime is 25252530557. The reversal of 25252530549 is 94503525252.

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

It is not a de Polignac number, because 25252530549 - 2⁴ = 25252530533 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 25252530549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25252530509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3560179 + ... + 3567264.

It is an arithmetic number, because the mean of its divisors is an integer number (4212319404).

Almost surely, 2^25252530549 is an apocalyptic number.

It is an amenable number.

25252530549 is a deficient number, since it is larger than the sum of its proper divisors (8446024683).

25252530549 is a wasteful number, since it uses less digits than its factorization.

25252530549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128627.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 25252530549 in words is "twenty-five billion, two hundred fifty-two million, five hundred thirty thousand, five hundred forty-nine".