65426250740 has 24 divisors (see below), whose sum is σ = 137591154792. Its totient is φ = 26133161600.

The previous prime is 65426250737. The next prime is 65426250749. The reversal of 65426250740 is 4705262456.

It can be written as a sum of positive squares in 4 ways, for example, as 5488439056 + 59937811684 = 74084^2 + 244822^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65426250749) 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, 2319299 + ... + 2347338.

It is an arithmetic number, because the mean of its divisors is an integer number (5732964783).

Almost surely, 2^65426250740 is an apocalyptic number.

It is an amenable number.

65426250740 is an abundant number, since it is smaller than the sum of its proper divisors (72164904052).

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

65426250740 is a wasteful number, since it uses less digits than its factorization.

65426250740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667347 (or 4667345 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 65426250740 in words is "sixty-five billion, four hundred twenty-six million, two hundred fifty thousand, seven hundred forty".