25907747990 has 16 divisors (see below), whose sum is σ = 46942783200. Its totient is φ = 10294468800.

The previous prime is 25907747953. The next prime is 25907748001. The reversal of 25907747990 is 9974770952.

It is a super-2 number, since 2×25907747990² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 8577215 + ... + 8580234.

It is an arithmetic number, because the mean of its divisors is an integer number (2933923950).

Almost surely, 2^25907747990 is an apocalyptic number.

25907747990 is a deficient number, since it is larger than the sum of its proper divisors (21035035210).

25907747990 is a wasteful number, since it uses less digits than its factorization.

25907747990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17157607.

The product of its (nonzero) digits is 10001880, while the sum is 59.

The spelling of 25907747990 in words is "twenty-five billion, nine hundred seven million, seven hundred forty-seven thousand, nine hundred ninety".