525422221040 has 40 divisors (see below), whose sum is σ = 1222030341600. Its totient is φ = 210095997696.

The previous prime is 525422221021. The next prime is 525422221063. The reversal of 525422221040 is 40122224525.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 525422220994 and 525422221012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906515 + ... + 1368434.

It is an arithmetic number, because the mean of its divisors is an integer number (30550758540).

Almost surely, 2^525422221040 is an apocalyptic number.

It is an amenable number.

525422221040 is an abundant number, since it is smaller than the sum of its proper divisors (696608120560).

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

525422221040 is a wasteful number, since it uses less digits than its factorization.

525422221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277849 (or 2277843 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 525422221040 its reverse (40122224525), we get a palindrome (565544445565).

The spelling of 525422221040 in words is "five hundred twenty-five billion, four hundred twenty-two million, two hundred twenty-one thousand, forty".