25490663308 has 24 divisors (see below), whose sum is σ = 48669304320. Its totient is φ = 11585400720.

The previous prime is 25490663293. The next prime is 25490663351. The reversal of 25490663308 is 80336609452.

It is a happy number.

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, 463185 + ... + 515287.

It is an arithmetic number, because the mean of its divisors is an integer number (2027887680).

Almost surely, 2^25490663308 is an apocalyptic number.

It is an amenable number.

25490663308 is a deficient number, since it is larger than the sum of its proper divisors (23178641012).

25490663308 is a wasteful number, since it uses less digits than its factorization.

25490663308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63237 (or 63235 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 25490663308 in words is "twenty-five billion, four hundred ninety million, six hundred sixty-three thousand, three hundred eight".