25283687520 has 192 divisors, whose sum is σ = 98023080960. Its totient is φ = 5334571008.

The previous prime is 25283687509. The next prime is 25283687551. The reversal of 25283687520 is 2578638252.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 25283687520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245740 + ... + 333099.

It is an arithmetic number, because the mean of its divisors is an integer number (510536880).

Almost surely, 2^25283687520 is an apocalyptic number.

25283687520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25283687520 is an abundant number, since it is smaller than the sum of its proper divisors (72739393440).

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

25283687520 is a wasteful number, since it uses less digits than its factorization.

25283687520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578877 (or 578869 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 25283687520 in words is "twenty-five billion, two hundred eighty-three million, six hundred eighty-seven thousand, five hundred twenty".