263425500 has 384 divisors, whose sum is σ = 978432000. Its totient is φ = 60652800.

The previous prime is 263425499. The next prime is 263425567. The reversal of 263425500 is 5524362.

263425500 is a `hidden beast` number, since 2 + 634 + 25 + 5 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3334461 + ... + 3334539.

It is an arithmetic number, because the mean of its divisors is an integer number (2548000).

Almost surely, 2^263425500 is an apocalyptic number.

263425500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263425500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489216000).

263425500 is an abundant number, since it is smaller than the sum of its proper divisors (715006500).

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

263425500 is a wasteful number, since it uses less digits than its factorization.

263425500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 263425500 is about 16230.3881654137. The cubic root of 263425500 is about 641.0411925731.

Adding to 263425500 its reverse (5524362), we get a palindrome (268949862).

The spelling of 263425500 in words is "two hundred sixty-three million, four hundred twenty-five thousand, five hundred".