1625420226 has 8 divisors (see below), whose sum is σ = 3250840464. Its totient is φ = 541806740.

The previous prime is 1625420191. The next prime is 1625420239. The reversal of 1625420226 is 6220245261.

It is a happy number.

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

1625420226 is an admirable number.

It is a super-2 number, since 2×1625420226² = 5283981822179782152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1625420193 and 1625420202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135451680 + ... + 135451691.

It is an arithmetic number, because the mean of its divisors is an integer number (406355058).

Almost surely, 2^1625420226 is an apocalyptic number.

1625420226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625420226 is a wasteful number, since it uses less digits than its factorization.

1625420226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270903376.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1625420226 is about 40316.5006666005. The cubic root of 1625420226 is about 1175.7686778921.

Adding to 1625420226 its reverse (6220245261), we get a palindrome (7845665487).

The spelling of 1625420226 in words is "one billion, six hundred twenty-five million, four hundred twenty thousand, two hundred twenty-six".