12523253540 has 24 divisors (see below), whose sum is σ = 30055808832. Its totient is φ = 4293686880.

The previous prime is 12523253527. The next prime is 12523253543. The reversal of 12523253540 is 4535232521.

It is a junction number, because it is equal to n+sod(n) for n = 12523253497 and 12523253506.

It is not an unprimeable number, because it can be changed into a prime (12523253543) 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, 44725766 + ... + 44726045.

It is an arithmetic number, because the mean of its divisors is an integer number (1252325368).

Almost surely, 2^12523253540 is an apocalyptic number.

12523253540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12523253540 is an abundant number, since it is smaller than the sum of its proper divisors (17532555292).

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

12523253540 is a wasteful number, since it uses less digits than its factorization.

12523253540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89451827 (or 89451825 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 12523253540 in words is "twelve billion, five hundred twenty-three million, two hundred fifty-three thousand, five hundred forty".