25105352512 has 28 divisors (see below), whose sum is σ = 50003666820. Its totient is φ = 12506003456.

The previous prime is 25105352509. The next prime is 25105352543. The reversal of 25105352512 is 21525350152.

It can be written as a sum of positive squares in 2 ways, for example, as 2574141696 + 22531210816 = 50736^2 + 150104^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711913 + ... + 746344.

Almost surely, 2^25105352512 is an apocalyptic number.

It is an amenable number.

25105352512 is a deficient number, since it is larger than the sum of its proper divisors (24898314308).

25105352512 is a wasteful number, since it uses less digits than its factorization.

25105352512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458538 (or 1458528 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 25105352512 in words is "twenty-five billion, one hundred five million, three hundred fifty-two thousand, five hundred twelve".