25503375487 has 8 divisors (see below), whose sum is σ = 25648786800. Its totient is φ = 25358014080.

The previous prime is 25503375449. The next prime is 25503375511. The reversal of 25503375487 is 78457330552.

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 25503375487 - 2¹¹ = 25503373439 is a prime.

It is a super-2 number, since 2×25503375487² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25503375487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25503375787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593708 + ... + 1609630.

It is an arithmetic number, because the mean of its divisors is an integer number (3206098350).

Almost surely, 2^25503375487 is an apocalyptic number.

25503375487 is a deficient number, since it is larger than the sum of its proper divisors (145411313).

25503375487 is a wasteful number, since it uses less digits than its factorization.

25503375487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24953.

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 25503375487 in words is "twenty-five billion, five hundred three million, three hundred seventy-five thousand, four hundred eighty-seven".