1625420227 has 8 divisors (see below), whose sum is σ = 1712122560. Its totient is φ = 1538833320.

The previous prime is 1625420191. The next prime is 1625420239. The reversal of 1625420227 is 7220245261.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1625420227 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1625420257) 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, 852 + ... + 57022.

It is an arithmetic number, because the mean of its divisors is an integer number (214015320).

Almost surely, 2^1625420227 is an apocalyptic number.

1625420227 is a deficient number, since it is larger than the sum of its proper divisors (86702333).

1625420227 is a wasteful number, since it uses less digits than its factorization.

1625420227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57713.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1625420227 is about 40316.5006790024. The cubic root of 1625420227 is about 1175.7686781332.

Adding to 1625420227 its reverse (7220245261), we get a palindrome (8845665488).

It can be divided in two parts, 16254 and 20227, that added together give a square (36481 = 191²).

The spelling of 1625420227 in words is "one billion, six hundred twenty-five million, four hundred twenty thousand, two hundred twenty-seven".