1622921425 has 12 divisors (see below), whose sum is σ = 2013894540. Its totient is φ = 1297387520.

The previous prime is 1622921413. The next prime is 1622921471. The reversal of 1622921425 is 5241292261.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 175271121 + 1447650304 = 13239^2 + 38048^2 .

It is not a de Polignac number, because 1622921425 - 2⁷ = 1622921297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12189 + ... + 58261.

It is an arithmetic number, because the mean of its divisors is an integer number (167824545).

Almost surely, 2^1622921425 is an apocalyptic number.

It is an amenable number.

1622921425 is a deficient number, since it is larger than the sum of its proper divisors (390973115).

1622921425 is a wasteful number, since it uses less digits than its factorization.

1622921425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47492 (or 47487 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 1622921425 is about 40285.4989419270. The cubic root of 1622921425 is about 1175.1658555677.

The spelling of 1622921425 in words is "one billion, six hundred twenty-two million, nine hundred twenty-one thousand, four hundred twenty-five".