25780146049 has 8 divisors (see below), whose sum is σ = 29465694720. Its totient is φ = 22095265056.

The previous prime is 25780146031. The next prime is 25780146061. The reversal of 25780146049 is 94064108752.

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

It is a cyclic number.

It is not a de Polignac number, because 25780146049 - 2⁹ = 25780145537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25780146449) 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, 81244 + ... + 241165.

It is an arithmetic number, because the mean of its divisors is an integer number (3683211840).

Almost surely, 2^25780146049 is an apocalyptic number.

It is an amenable number.

25780146049 is a deficient number, since it is larger than the sum of its proper divisors (3685548671).

25780146049 is a wasteful number, since it uses less digits than its factorization.

25780146049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333839.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 25780146049 in words is "twenty-five billion, seven hundred eighty million, one hundred forty-six thousand, forty-nine".