25315290906 has 16 divisors (see below), whose sum is σ = 52831911744. Its totient is φ = 8071541984.

The previous prime is 25315290877. The next prime is 25315290997. The reversal of 25315290906 is 60909251352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91721931 + ... + 91722206.

It is an arithmetic number, because the mean of its divisors is an integer number (3301994484).

Almost surely, 2^25315290906 is an apocalyptic number.

25315290906 is an abundant number, since it is smaller than the sum of its proper divisors (27516620838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25315290906 is a wasteful number, since it uses less digits than its factorization.

25315290906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183444165.

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 25315290906 in words is "twenty-five billion, three hundred fifteen million, two hundred ninety thousand, nine hundred six".