65425661 has 8 divisors (see below), whose sum is σ = 76511424. Its totient is φ = 54774720.

The previous prime is 65425643. The next prime is 65425669. The reversal of 65425661 is 16652456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65425661 - 2⁶ = 65425597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65425669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108380 + ... + 108981.

It is an arithmetic number, because the mean of its divisors is an integer number (9563928).

Almost surely, 2^65425661 is an apocalyptic number.

It is an amenable number.

65425661 is a deficient number, since it is larger than the sum of its proper divisors (11085763).

65425661 is a wasteful number, since it uses less digits than its factorization.

65425661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217411.

The product of its digits is 43200, while the sum is 35.

The square root of 65425661 is about 8088.6130455103. The cubic root of 65425661 is about 402.9483418896.

The spelling of 65425661 in words is "sixty-five million, four hundred twenty-five thousand, six hundred sixty-one".