65925387457 has 4 divisors (see below), whose sum is σ = 66399670960. Its totient is φ = 65451103956.

The previous prime is 65925387449. The next prime is 65925387497. The reversal of 65925387457 is 75478352956.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65925387457 - 2³ = 65925387449 is a prime.

It is a super-2 number, since 2×65925387457² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65925387395 and 65925387404.

It is not an unprimeable number, because it can be changed into a prime (65925387497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237141543 + ... + 237141820.

It is an arithmetic number, because the mean of its divisors is an integer number (16599917740).

Almost surely, 2^65925387457 is an apocalyptic number.

It is an amenable number.

65925387457 is a deficient number, since it is larger than the sum of its proper divisors (474283503).

65925387457 is a wasteful number, since it uses less digits than its factorization.

65925387457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474283502.

The product of its digits is 63504000, while the sum is 61.

The spelling of 65925387457 in words is "sixty-five billion, nine hundred twenty-five million, three hundred eighty-seven thousand, four hundred fifty-seven".