25349516677 has 8 divisors (see below), whose sum is σ = 26467188480. Its totient is φ = 24233138160.

The previous prime is 25349516617. The next prime is 25349516681. The reversal of 25349516677 is 77661594352.

It is a happy number.

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 25349516677 - 2¹⁵ = 25349483909 is a prime.

It is a super-2 number, since 2×25349516677² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25349516617) 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, 283149 + ... + 361762.

It is an arithmetic number, because the mean of its divisors is an integer number (3308398560).

Almost surely, 2^25349516677 is an apocalyptic number.

It is an amenable number.

25349516677 is a deficient number, since it is larger than the sum of its proper divisors (1117671803).

25349516677 is a wasteful number, since it uses less digits than its factorization.

25349516677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646643.

The product of its digits is 9525600, while the sum is 55.

The spelling of 25349516677 in words is "twenty-five billion, three hundred forty-nine million, five hundred sixteen thousand, six hundred seventy-seven".