525339191490 has 64 divisors (see below), whose sum is σ = 1284273429120. Its totient is φ = 137507880960.

The previous prime is 525339191449. The next prime is 525339191491. The reversal of 525339191490 is 94191933525.

It is a super-2 number, since 2×525339191490² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (525339191491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400831 + ... + 1100610.

It is an arithmetic number, because the mean of its divisors is an integer number (20066772330).

Almost surely, 2^525339191490 is an apocalyptic number.

525339191490 is an abundant number, since it is smaller than the sum of its proper divisors (758934237630).

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

525339191490 is a wasteful number, since it uses less digits than its factorization.

525339191490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501667.

The product of its (nonzero) digits is 1312200, while the sum is 51.

The spelling of 525339191490 in words is "five hundred twenty-five billion, three hundred thirty-nine million, one hundred ninety-one thousand, four hundred ninety".