1620225526 has 8 divisors (see below), whose sum is σ = 2431277640. Its totient is φ = 809799648.

The previous prime is 1620225521. The next prime is 1620225533. The reversal of 1620225526 is 6255220261.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620225521) 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, 150036 + ... + 160471.

It is an arithmetic number, because the mean of its divisors is an integer number (303909705).

Almost surely, 2^1620225526 is an apocalyptic number.

1620225526 is a deficient number, since it is larger than the sum of its proper divisors (811052114).

1620225526 is a wasteful number, since it uses less digits than its factorization.

1620225526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313118.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1620225526 is about 40252.0251167565. The cubic root of 1620225526 is about 1174.5147900958.

Adding to 1620225526 its reverse (6255220261), we get a palindrome (7875445787).

The spelling of 1620225526 in words is "one billion, six hundred twenty million, two hundred twenty-five thousand, five hundred twenty-six".