521374473125 has 40 divisors (see below), whose sum is σ = 719735111040. Its totient is φ = 374381280000.

The previous prime is 521374473107. The next prime is 521374473127.

It is a happy number.

521374473125 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-521374473125 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521374473127) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63149 + ... + 1023101.

It is an arithmetic number, because the mean of its divisors is an integer number (17993377776).

Almost surely, 2^521374473125 is an apocalyptic number.

521374473125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

521374473125 is a deficient number, since it is larger than the sum of its proper divisors (198360637915).

521374473125 is an equidigital number, since it uses as much as digits as its factorization.

521374473125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960063 (or 960048 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

It can be divided in two parts, 521374 and 473125, that added together give a palindrome (994499).

The spelling of 521374473125 in words is "five hundred twenty-one billion, three hundred seventy-four million, four hundred seventy-three thousand, one hundred twenty-five".