525040111540 has 48 divisors (see below), whose sum is σ = 1261132088832. Its totient is φ = 179865778176.

The previous prime is 525040111439. The next prime is 525040111549. The reversal of 525040111540 is 45111040525.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 525040111499 and 525040111508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525040111549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370412 + ... + 1711171.

It is an arithmetic number, because the mean of its divisors is an integer number (26273585184).

Almost surely, 2^525040111540 is an apocalyptic number.

It is an amenable number.

525040111540 is an abundant number, since it is smaller than the sum of its proper divisors (736091977292).

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

525040111540 is a wasteful number, since it uses less digits than its factorization.

525040111540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082816 (or 3082814 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 525040111540 in words is "five hundred twenty-five billion, forty million, one hundred eleven thousand, five hundred forty".