65224250 has 128 divisors (see below), whose sum is σ = 155990016. Its totient is φ = 19872000.

The previous prime is 65224241. The next prime is 65224253. The reversal of 65224250 is 5242256.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65224253) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1069220 + ... + 1069280.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 2^65224250 is an apocalyptic number.

65224250 is an abundant number, since it is smaller than the sum of its proper divisors (90765766).

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

65224250 is a wasteful number, since it uses less digits than its factorization.

65224250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 65224250 is about 8076.1531684336. The cubic root of 65224250 is about 402.5344285970.

The spelling of 65224250 in words is "sixty-five million, two hundred twenty-four thousand, two hundred fifty".