1025322621 has 4 divisors (see below), whose sum is σ = 1367096832. Its totient is φ = 683548412.

The previous prime is 1025322611. The next prime is 1025322647. The reversal of 1025322621 is 1262235201.

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.

It is a cyclic number.

It is not a de Polignac number, because 1025322621 - 2²⁵ = 991768189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1025322591 and 1025322600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025322601) 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 3 ways as a sum of consecutive naturals, for example, 170887101 + ... + 170887106.

It is an arithmetic number, because the mean of its divisors is an integer number (341774208).

Almost surely, 2^1025322621 is an apocalyptic number.

It is an amenable number.

1025322621 is a deficient number, since it is larger than the sum of its proper divisors (341774211).

1025322621 is an equidigital number, since it uses as much as digits as its factorization.

1025322621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341774210.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1025322621 is about 32020.6592842808. The cubic root of 1025322621 is about 1008.3706110360.

Adding to 1025322621 its reverse (1262235201), we get a palindrome (2287557822).

The spelling of 1025322621 in words is "one billion, twenty-five million, three hundred twenty-two thousand, six hundred twenty-one".