65431474787025 has 240 divisors, whose sum is σ = 123740650549824. Its totient is φ = 34173332766720.

The previous prime is 65431474787023. The next prime is 65431474787059. The reversal of 65431474787025 is 52078747413456.

65431474787025 is a `hidden beast` number, since 6 + 5 + 4 + 3 + 1 + 474 + 78 + 70 + 25 = 666.

It is not a de Polignac number, because 65431474787025 - 2¹ = 65431474787023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65431474787023) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 16747240122 + ... + 16747244028.

Almost surely, 2^{65431474787025} is an apocalyptic number.

It is an amenable number.

65431474787025 is a deficient number, since it is larger than the sum of its proper divisors (58309175762799).

65431474787025 is a wasteful number, since it uses less digits than its factorization.

65431474787025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782 (or 4768 counting only the distinct ones).

The product of its (nonzero) digits is 158054400, while the sum is 63.

The spelling of 65431474787025 in words is "sixty-five trillion, four hundred thirty-one billion, four hundred seventy-four million, seven hundred eighty-seven thousand, twenty-five".