65225040 has 40 divisors (see below), whose sum is σ = 202198368. Its totient is φ = 17393280.

The previous prime is 65225029. The next prime is 65225051. The reversal of 65225040 is 4052256.

It is an interprime number because it is at equal distance from previous prime (65225029) and next prime (65225051).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 65225040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135646 + ... + 136125.

Almost surely, 2^65225040 is an apocalyptic number.

65225040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65225040 is an abundant number, since it is smaller than the sum of its proper divisors (136973328).

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

65225040 is a wasteful number, since it uses less digits than its factorization.

65225040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271787 (or 271781 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 65225040 is about 8076.2020777095. The cubic root of 65225040 is about 402.5360537641.

Adding to 65225040 its reverse (4052256), we get a palindrome (69277296).

The spelling of 65225040 in words is "sixty-five million, two hundred twenty-five thousand, forty".