1325400521 has 8 divisors (see below), whose sum is σ = 1353991680. Its totient is φ = 1296942192.

The previous prime is 1325400511. The next prime is 1325400533. The reversal of 1325400521 is 1250045231.

1325400521 is nontrivially palindromic in base 8.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1325400521 - 2⁶ = 1325400457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325400511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12905 + ... + 53078.

It is an arithmetic number, because the mean of its divisors is an integer number (169248960).

Almost surely, 2^1325400521 is an apocalyptic number.

It is an amenable number.

1325400521 is a deficient number, since it is larger than the sum of its proper divisors (28591159).

1325400521 is an equidigital number, since it uses as much as digits as its factorization.

1325400521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66415.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1325400521 is about 36406.0506097544. The cubic root of 1325400521 is about 1098.4552755684.

Adding to 1325400521 its reverse (1250045231), we get a palindrome (2575445752).

The spelling of 1325400521 in words is "one billion, three hundred twenty-five million, four hundred thousand, five hundred twenty-one".