25320535045 has 16 divisors (see below), whose sum is σ = 33606301680. Its totient is φ = 18192881664.

The previous prime is 25320535039. The next prime is 25320535069. The reversal of 25320535045 is 54053502352.

It can be written as a sum of positive squares in 8 ways, for example, as 1328383809 + 23992151236 = 36447^2 + 154894^2 .

It is a cyclic number.

It is not a de Polignac number, because 25320535045 - 2¹⁹ = 25320010757 is a prime.

It is a super-2 number, since 2×25320535045² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25320535045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5261740 + ... + 5266549.

It is an arithmetic number, because the mean of its divisors is an integer number (2100393855).

Almost surely, 2^25320535045 is an apocalyptic number.

It is an amenable number.

25320535045 is a deficient number, since it is larger than the sum of its proper divisors (8285766635).

25320535045 is a wasteful number, since it uses less digits than its factorization.

25320535045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10528344.

The product of its (nonzero) digits is 90000, while the sum is 34.

The spelling of 25320535045 in words is "twenty-five billion, three hundred twenty million, five hundred thirty-five thousand, forty-five".