65251000 has 64 divisors (see below), whose sum is σ = 159382080. Its totient is φ = 24956800.

The previous prime is 65250989. The next prime is 65251009. The reversal of 65251000 is 15256.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65251009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21582 + ... + 24418.

It is an arithmetic number, because the mean of its divisors is an integer number (2490345).

Almost surely, 2^65251000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65251000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79691040).

65251000 is an abundant number, since it is smaller than the sum of its proper divisors (94131080).

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

65251000 is a wasteful number, since it uses less digits than its factorization.

65251000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881 (or 2867 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 65251000 is about 8077.8091089107. The cubic root of 65251000 is about 402.5894506900.

Adding to 65251000 its reverse (15256), we get a palindrome (65266256).

The spelling of 65251000 in words is "sixty-five million, two hundred fifty-one thousand".