25375025521 has 8 divisors (see below), whose sum is σ = 26713840320. Its totient is φ = 24036539472.

The previous prime is 25375025461. The next prime is 25375025569. The reversal of 25375025521 is 12552057352.

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 25375025521 - 2¹¹ = 25375023473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25375022521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84996 + ... + 240778.

It is an arithmetic number, because the mean of its divisors is an integer number (3339230040).

Almost surely, 2^25375025521 is an apocalyptic number.

It is an amenable number.

25375025521 is a deficient number, since it is larger than the sum of its proper divisors (1338814799).

25375025521 is a wasteful number, since it uses less digits than its factorization.

25375025521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164375.

The product of its (nonzero) digits is 105000, while the sum is 37.

The spelling of 25375025521 in words is "twenty-five billion, three hundred seventy-five million, twenty-five thousand, five hundred twenty-one".