1022625161 has 4 divisors (see below), whose sum is σ = 1022886912. Its totient is φ = 1022363412.

The previous prime is 1022625143. The next prime is 1022625211. The reversal of 1022625161 is 1615262201.

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 1022625161 - 2¹⁴ = 1022608777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022625161.

It is not an unprimeable number, because it can be changed into a prime (1022625661) 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, 124925 + ... + 132858.

It is an arithmetic number, because the mean of its divisors is an integer number (255721728).

Almost surely, 2^1022625161 is an apocalyptic number.

It is an amenable number.

1022625161 is a deficient number, since it is larger than the sum of its proper divisors (261751).

1022625161 is an equidigital number, since it uses as much as digits as its factorization.

1022625161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261750.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1022625161 is about 31978.5109253073. The cubic root of 1022625161 is about 1007.4855471043.

Adding to 1022625161 its reverse (1615262201), we get a palindrome (2637887362).

The spelling of 1022625161 in words is "one billion, twenty-two million, six hundred twenty-five thousand, one hundred sixty-one".