25490982515 has 8 divisors (see below), whose sum is σ = 30654683280. Its totient is φ = 20349116512.

The previous prime is 25490982443. The next prime is 25490982551. The reversal of 25490982515 is 51528909452.

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 25490982515 - 2³⁴ = 8311113331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5456120 + ... + 5460789.

It is an arithmetic number, because the mean of its divisors is an integer number (3831835410).

Almost surely, 2^25490982515 is an apocalyptic number.

25490982515 is a deficient number, since it is larger than the sum of its proper divisors (5163700765).

25490982515 is a wasteful number, since it uses less digits than its factorization.

25490982515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10917381.

The product of its (nonzero) digits is 1296000, while the sum is 50.

The spelling of 25490982515 in words is "twenty-five billion, four hundred ninety million, nine hundred eighty-two thousand, five hundred fifteen".