423540612451525 has 24 divisors (see below), whose sum is σ = 543971942886600. Its totient is φ = 326744224128000.

The previous prime is 423540612451519. The next prime is 423540612451573. The reversal of 423540612451525 is 525154216045324.

It can be written as a sum of positive squares in 12 ways, for example, as 22358059721761 + 401182552729764 = 4728431^2 + 20029542^2 .

It is not a de Polignac number, because 423540612451525 - 2²⁷ = 423540478233797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360472776 + ... + 361645825.

It is an arithmetic number, because the mean of its divisors is an integer number (22665497620275).

Almost surely, 2^{423540612451525} is an apocalyptic number.

It is an amenable number.

423540612451525 is a deficient number, since it is larger than the sum of its proper divisors (120431330435075).

423540612451525 is a wasteful number, since it uses less digits than its factorization.

423540612451525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722119449 (or 722119444 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 49.

Adding to 423540612451525 its reverse (525154216045324), we get a palindrome (948694828496849).

The spelling of 423540612451525 in words is "four hundred twenty-three trillion, five hundred forty billion, six hundred twelve million, four hundred fifty-one thousand, five hundred twenty-five".