25284511485 has 48 divisors (see below), whose sum is σ = 47483751744. Its totient is φ = 12396658176.

The previous prime is 25284511457. The next prime is 25284511489. The reversal of 25284511485 is 58411548252.

25284511485 is a `hidden beast` number, since 2 + 52 + 8 + 4 + 511 + 4 + 85 = 666.

It is not a de Polignac number, because 25284511485 - 2¹² = 25284507389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25284511485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25284511489) 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 47 ways as a sum of consecutive naturals, for example, 351427 + ... + 417216.

It is an arithmetic number, because the mean of its divisors is an integer number (989244828).

Almost surely, 2^25284511485 is an apocalyptic number.

It is an amenable number.

25284511485 is a deficient number, since it is larger than the sum of its proper divisors (22199240259).

25284511485 is a wasteful number, since it uses less digits than its factorization.

25284511485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768714 (or 768711 counting only the distinct ones).

The product of its digits is 512000, while the sum is 45.

The spelling of 25284511485 in words is "twenty-five billion, two hundred eighty-four million, five hundred eleven thousand, four hundred eighty-five".