1325621 has 4 divisors (see below), whose sum is σ = 1446144. Its totient is φ = 1205100.

The previous prime is 1325617. The next prime is 1325627. The reversal of 1325621 is 1265231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1265231 = 11 ⋅115021.

It is a cyclic number.

It is not a de Polignac number, because 1325621 - 2² = 1325617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1325593 and 1325602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60245 + ... + 60266.

It is an arithmetic number, because the mean of its divisors is an integer number (361536).

2^1325621 is an apocalyptic number.

1325621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1325621 is a deficient number, since it is larger than the sum of its proper divisors (120523).

1325621 is a wasteful number, since it uses less digits than its factorization.

1325621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120522.

The product of its digits is 360, while the sum is 20.

The square root of 1325621 is about 1151.3561568863. The cubic root of 1325621 is about 109.8516181156.

The spelling of 1325621 in words is "one million, three hundred twenty-five thousand, six hundred twenty-one".