525444951906 has 96 divisors (see below), whose sum is σ = 1315672550400. Its totient is φ = 148455169632.

The previous prime is 525444951851. The next prime is 525444951943. The reversal of 525444951906 is 609159444525.

It is a happy number.

525444951906 is a `hidden beast` number, since 5 + 2 + 5 + 4 + 449 + 5 + 190 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4022781 + ... + 4151343.

It is an arithmetic number, because the mean of its divisors is an integer number (13704922400).

Almost surely, 2^525444951906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525444951906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657836275200).

525444951906 is an abundant number, since it is smaller than the sum of its proper divisors (790227598494).

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

525444951906 is a wasteful number, since it uses less digits than its factorization.

525444951906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128940 (or 128937 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 525444951906 in words is "five hundred twenty-five billion, four hundred forty-four million, nine hundred fifty-one thousand, nine hundred six".