25250525305 has 8 divisors (see below), whose sum is σ = 30323575944. Its totient is φ = 20185123200.

The previous prime is 25250525303. The next prime is 25250525327. The reversal of 25250525305 is 50352505252.

It can be written as a sum of positive squares in 4 ways, for example, as 9805752576 + 15444772729 = 99024^2 + 124277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25250525305 - 2¹ = 25250525303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25250525303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1904866 + ... + 1918075.

It is an arithmetic number, because the mean of its divisors is an integer number (3790446993).

Almost surely, 2^25250525305 is an apocalyptic number.

It is an amenable number.

25250525305 is a deficient number, since it is larger than the sum of its proper divisors (5073050639).

25250525305 is a wasteful number, since it uses less digits than its factorization.

25250525305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824267.

The product of its (nonzero) digits is 75000, while the sum is 34.

The spelling of 25250525305 in words is "twenty-five billion, two hundred fifty million, five hundred twenty-five thousand, three hundred five".