1625332620 has 24 divisors (see below), whose sum is σ = 4550931504. Its totient is φ = 433422016.

The previous prime is 1625332603. The next prime is 1625332661. The reversal of 1625332620 is 262335261.

It is a super-2 number, since 2×1625332620² = 5283412251272128800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13544379 + ... + 13544498.

It is an arithmetic number, because the mean of its divisors is an integer number (189622146).

Almost surely, 2^1625332620 is an apocalyptic number.

1625332620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1625332620 is an abundant number, since it is smaller than the sum of its proper divisors (2925598884).

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

1625332620 is a wasteful number, since it uses less digits than its factorization.

1625332620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27088889 (or 27088887 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1625332620 is about 40315.4141737376. The cubic root of 1625332620 is about 1175.7475538693.

Adding to 1625332620 its reverse (262335261), we get a palindrome (1887667881).

The spelling of 1625332620 in words is "one billion, six hundred twenty-five million, three hundred thirty-two thousand, six hundred twenty".