25825787553 has 8 divisors (see below), whose sum is σ = 34461061216. Its totient is φ = 17203852800.

The previous prime is 25825787423. The next prime is 25825787569. The reversal of 25825787553 is 35578752852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25825787553 - 2¹³ = 25825779361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25825787493 and 25825787502.

It is not an unprimeable number, because it can be changed into a prime (25825787353) 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, 3330208 + ... + 3337953.

It is an arithmetic number, because the mean of its divisors is an integer number (4307632652).

Almost surely, 2^25825787553 is an apocalyptic number.

It is an amenable number.

25825787553 is a deficient number, since it is larger than the sum of its proper divisors (8635273663).

25825787553 is a wasteful number, since it uses less digits than its factorization.

25825787553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669455.

The product of its digits is 23520000, while the sum is 57.

The spelling of 25825787553 in words is "twenty-five billion, eight hundred twenty-five million, seven hundred eighty-seven thousand, five hundred fifty-three".