1625554020 has 24 divisors (see below), whose sum is σ = 4551551424. Its totient is φ = 433481056.

The previous prime is 1625554001. The next prime is 1625554031. The reversal of 1625554020 is 204555261.

1625554020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13546224 + ... + 13546343.

It is an arithmetic number, because the mean of its divisors is an integer number (189647976).

Almost surely, 2^1625554020 is an apocalyptic number.

1625554020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1625554020 is an abundant number, since it is smaller than the sum of its proper divisors (2925997404).

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

1625554020 is a wasteful number, since it uses less digits than its factorization.

1625554020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27092579 (or 27092577 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1625554020 is about 40318.1599282507. The cubic root of 1625554020 is about 1175.8009375453.

The spelling of 1625554020 in words is "one billion, six hundred twenty-five million, five hundred fifty-four thousand, twenty".