25529084545 has 8 divisors (see below), whose sum is σ = 30660587496. Its totient is φ = 20406143616.

The previous prime is 25529084533. The next prime is 25529084557. The reversal of 25529084545 is 54548092552.

It is an interprime number because it is at equal distance from previous prime (25529084533) and next prime (25529084557).

It can be written as a sum of positive squares in 4 ways, for example, as 1313990001 + 24215094544 = 36249^2 + 155612^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25529084545 - 2⁹ = 25529084033 is a prime.

It is a Duffinian 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, 2133942 + ... + 2145871.

It is an arithmetic number, because the mean of its divisors is an integer number (3832573437).

Almost surely, 2^25529084545 is an apocalyptic number.

It is an amenable number.

25529084545 is a deficient number, since it is larger than the sum of its proper divisors (5131502951).

25529084545 is a wasteful number, since it uses less digits than its factorization.

25529084545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281011.

The product of its (nonzero) digits is 2880000, while the sum is 49.

The spelling of 25529084545 in words is "twenty-five billion, five hundred twenty-nine million, eighty-four thousand, five hundred forty-five".