265249950 has 192 divisors, whose sum is σ = 805662720. Its totient is φ = 56448000.

The previous prime is 265249939. The next prime is 265249967. The reversal of 265249950 is 59942562.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 943810 + ... + 944090.

It is an arithmetic number, because the mean of its divisors is an integer number (4196160).

Almost surely, 2^265249950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265249950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402831360).

265249950 is an abundant number, since it is smaller than the sum of its proper divisors (540412770).

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

265249950 is a wasteful number, since it uses less digits than its factorization.

265249950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 265249950 is about 16286.4959398884. The cubic root of 265249950 is about 642.5177111097.

The spelling of 265249950 in words is "two hundred sixty-five million, two hundred forty-nine thousand, nine hundred fifty".