25493353486 has 8 divisors (see below), whose sum is σ = 38669693760. Its totient is φ = 12603455568.

The previous prime is 25493353439. The next prime is 25493353499. The reversal of 25493353486 is 68435339452.

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

It is a super-2 number, since 2×25493353486² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71610366 + ... + 71610721.

It is an arithmetic number, because the mean of its divisors is an integer number (4833711720).

Almost surely, 2^25493353486 is an apocalyptic number.

25493353486 is a deficient number, since it is larger than the sum of its proper divisors (13176340274).

25493353486 is a wasteful number, since it uses less digits than its factorization.

25493353486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143221178.

The product of its digits is 9331200, while the sum is 52.

The spelling of 25493353486 in words is "twenty-five billion, four hundred ninety-three million, three hundred fifty-three thousand, four hundred eighty-six".