25458824949 has 8 divisors (see below), whose sum is σ = 34047654432. Its totient is φ = 16921272720.

The previous prime is 25458824939. The next prime is 25458824981. The reversal of 25458824949 is 94942885452.

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

It is not a de Polignac number, because 25458824949 - 2⁵ = 25458824917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25458824892 and 25458824901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25458824939) 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, 12818154 + ... + 12820139.

It is an arithmetic number, because the mean of its divisors is an integer number (4255956804).

Almost surely, 2^25458824949 is an apocalyptic number.

It is an amenable number.

25458824949 is a deficient number, since it is larger than the sum of its proper divisors (8588829483).

25458824949 is a wasteful number, since it uses less digits than its factorization.

25458824949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25638627.

The product of its digits is 33177600, while the sum is 60.

The spelling of 25458824949 in words is "twenty-five billion, four hundred fifty-eight million, eight hundred twenty-four thousand, nine hundred forty-nine".