25493077249 has 8 divisors (see below), whose sum is σ = 26662078080. Its totient is φ = 24329126976.

The previous prime is 25493077193. The next prime is 25493077273. The reversal of 25493077249 is 94277039452.

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 25493077249 - 2⁷ = 25493077121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25493077196 and 25493077205.

It is not an unprimeable number, because it can be changed into a prime (25493077279) 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, 1252312 + ... + 1272505.

It is an arithmetic number, because the mean of its divisors is an integer number (3332759760).

Almost surely, 2^25493077249 is an apocalyptic number.

It is an amenable number.

25493077249 is a deficient number, since it is larger than the sum of its proper divisors (1169000831).

25493077249 is a wasteful number, since it uses less digits than its factorization.

25493077249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525279.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 25493077249 in words is "twenty-five billion, four hundred ninety-three million, seventy-seven thousand, two hundred forty-nine".