25284238520 has 16 divisors (see below), whose sum is σ = 56889536760. Its totient is φ = 10113695392.

The previous prime is 25284238501. The next prime is 25284238547. The reversal of 25284238520 is 2583248252.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 316052942 + ... + 316053021.

Almost surely, 2^25284238520 is an apocalyptic number.

25284238520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25284238520 is an abundant number, since it is smaller than the sum of its proper divisors (31605298240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25284238520 is a wasteful number, since it uses less digits than its factorization.

25284238520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632105974 (or 632105970 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 41.

The spelling of 25284238520 in words is "twenty-five billion, two hundred eighty-four million, two hundred thirty-eight thousand, five hundred twenty".