1625650222045 has 4 divisors (see below), whose sum is σ = 1950780266460. Its totient is φ = 1300520177632.

The previous prime is 1625650222043. The next prime is 1625650222069. The reversal of 1625650222045 is 5402220565261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 342896909476 + 1282753312569 = 585574^2 + 1132587^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625650222045 - 2¹ = 1625650222043 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1625650221989 and 1625650222007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625650222043) 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, 162565022200 + ... + 162565022209.

It is an arithmetic number, because the mean of its divisors is an integer number (487695066615).

Almost surely, 2^{1625650222045} is an apocalyptic number.

It is an amenable number.

1625650222045 is a deficient number, since it is larger than the sum of its proper divisors (325130044415).

1625650222045 is an equidigital number, since it uses as much as digits as its factorization.

1625650222045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325130044414.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 1625650222045 in words is "one trillion, six hundred twenty-five billion, six hundred fifty million, two hundred twenty-two thousand, forty-five".