25709020990 has 16 divisors (see below), whose sum is σ = 46531910880. Its totient is φ = 10226792160.

The previous prime is 25709020979. The next prime is 25709020991. The reversal of 25709020990 is 9902090752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25709020991) by changing a digit.

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, 7100130 + ... + 7103749.

It is an arithmetic number, because the mean of its divisors is an integer number (2908244430).

Almost surely, 2^25709020990 is an apocalyptic number.

25709020990 is a deficient number, since it is larger than the sum of its proper divisors (20822889890).

25709020990 is a wasteful number, since it uses less digits than its factorization.

25709020990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14204067.

The product of its (nonzero) digits is 102060, while the sum is 43.

The spelling of 25709020990 in words is "twenty-five billion, seven hundred nine million, twenty thousand, nine hundred ninety".