65425945 has 16 divisors (see below), whose sum is σ = 89525520. Its totient is φ = 45471744.

The previous prime is 65425933. The next prime is 65425963. The reversal of 65425945 is 54952456.

65425945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 446224 + 64979721 = 668^2 + 8061^2 .

It is a cyclic number.

It is not a de Polignac number, because 65425945 - 2⁷ = 65425817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65425898 and 65425907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28500 + ... + 30709.

It is an arithmetic number, because the mean of its divisors is an integer number (5595345).

Almost surely, 2^65425945 is an apocalyptic number.

65425945 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65425945 is a deficient number, since it is larger than the sum of its proper divisors (24099575).

65425945 is a wasteful number, since it uses less digits than its factorization.

65425945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59244.

The product of its digits is 216000, while the sum is 40.

The square root of 65425945 is about 8088.6306010350. The cubic root of 65425945 is about 402.9489249287.

The spelling of 65425945 in words is "sixty-five million, four hundred twenty-five thousand, nine hundred forty-five".