425740660505140 has 24 divisors (see below), whose sum is σ = 894060797169960. Its totient is φ = 170295233705088.

The previous prime is 425740660505131. The next prime is 425740660505143. The reversal of 425740660505140 is 41505066047524.

It can be written as a sum of positive squares in 4 ways, for example, as 290960216693136 + 134780443812004 = 17057556^2 + 11609498^2 .

It is a super-2 number, since 2×425740660505140² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425740660505143) 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, 61013947 + ... + 67632706.

It is an arithmetic number, because the mean of its divisors is an integer number (37252533215415).

Almost surely, 2^{425740660505140} is an apocalyptic number.

It is an amenable number.

425740660505140 is an abundant number, since it is smaller than the sum of its proper divisors (468320136664820).

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

425740660505140 is a wasteful number, since it uses less digits than its factorization.

425740660505140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128812131 (or 128812129 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 425740660505140 in words is "four hundred twenty-five trillion, seven hundred forty billion, six hundred sixty million, five hundred five thousand, one hundred forty".