25325521445 has 64 divisors (see below), whose sum is σ = 36571239936. Its totient is φ = 16473784320.

The previous prime is 25325521433. The next prime is 25325521471. The reversal of 25325521445 is 54412552352.

It is not a de Polignac number, because 25325521445 - 2⁸ = 25325521189 is a prime.

It is a super-2 number, since 2×25325521445² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25325521399 and 25325521408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15857387 + ... + 15858983.

It is an arithmetic number, because the mean of its divisors is an integer number (571425624).

Almost surely, 2^25325521445 is an apocalyptic number.

It is an amenable number.

25325521445 is a deficient number, since it is larger than the sum of its proper divisors (11245718491).

25325521445 is a wasteful number, since it uses less digits than its factorization.

25325521445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950.

The product of its digits is 240000, while the sum is 38.

The spelling of 25325521445 in words is "twenty-five billion, three hundred twenty-five million, five hundred twenty-one thousand, four hundred forty-five".