265625620 has 96 divisors (see below), whose sum is σ = 642039552. Its totient is φ = 91542528.

The previous prime is 265625617. The next prime is 265625641. The reversal of 265625620 is 26526562.

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, 256624 + ... + 257656.

It is an arithmetic number, because the mean of its divisors is an integer number (6687912).

Almost surely, 2^265625620 is an apocalyptic number.

265625620 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 265625620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321019776).

265625620 is an abundant number, since it is smaller than the sum of its proper divisors (376413932).

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

265625620 is a wasteful number, since it uses less digits than its factorization.

265625620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 265625620 is about 16298.0250337272. The cubic root of 265625620 is about 642.8208978036.

The spelling of 265625620 in words is "two hundred sixty-five million, six hundred twenty-five thousand, six hundred twenty".