25252530307581 has 8 divisors (see below), whose sum is σ = 33721133038560. Its totient is φ = 16809473890832.

The previous prime is 25252530307561. The next prime is 25252530307601. The reversal of 25252530307581 is 18570303525252.

It is an interprime number because it is at equal distance from previous prime (25252530307561) and next prime (25252530307601).

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 25252530307581 - 2¹⁰ = 25252530306557 is a prime.

It is a super-2 number, since 2×25252530307581² (a number of 28 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 25252530307581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25252530307561) 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, 6386576250 + ... + 6386580203.

It is an arithmetic number, because the mean of its divisors is an integer number (4215141629820).

Almost surely, 2^{25252530307581} is an apocalyptic number.

It is an amenable number.

25252530307581 is a deficient number, since it is larger than the sum of its proper divisors (8468602730979).

25252530307581 is a wasteful number, since it uses less digits than its factorization.

25252530307581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12773157115.

The product of its (nonzero) digits is 2520000, while the sum is 48.

The spelling of 25252530307581 in words is "twenty-five trillion, two hundred fifty-two billion, five hundred thirty million, three hundred seven thousand, five hundred eighty-one".