25107559010645 has 18 divisors (see below), whose sum is σ = 30228691257702. Its totient is φ = 20019851820096.

The previous prime is 25107559010609. The next prime is 25107559010647. The reversal of 25107559010645 is 54601095570152.

It can be written as a sum of positive squares in 9 ways, for example, as 21153542092804 + 3954016917841 = 4599298^2 + 1988471^2 .

It is not a de Polignac number, because 25107559010645 - 2⁶ = 25107559010581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25107559010593 and 25107559010602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25107559010647) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3551780171 + ... + 3551787239.

It is an arithmetic number, because the mean of its divisors is an integer number (1679371736539).

Almost surely, 2^{25107559010645} is an apocalyptic number.

It is an amenable number.

25107559010645 is a deficient number, since it is larger than the sum of its proper divisors (5121132247057).

25107559010645 is an frugal number, since it uses more digits than its factorization.

25107559010645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14777 (or 7391 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 50.

The spelling of 25107559010645 in words is "twenty-five trillion, one hundred seven billion, five hundred fifty-nine million, ten thousand, six hundred forty-five".