1625473980 has 240 divisors, whose sum is σ = 5566619520. Its totient is φ = 394647552.

The previous prime is 1625473937. The next prime is 1625474033. The reversal of 1625473980 is 893745261.

1625473980 is a `hidden beast` number, since 1 + 6 + 254 + 7 + 398 + 0 = 666.

1625473980 is digitally balanced in base 10, 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 (45).

1625473980 is strictly pandigital in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1663252 + ... + 1664228.

It is an arithmetic number, because the mean of its divisors is an integer number (23194248).

It is a 1-persistent number, because it is pandigital, but 2⋅1625473980 = 3250947960 is not.

It is a vampire number, since it can be written as 17586 ⋅ 92430 (with its own digits).

Almost surely, 2^1625473980 is an apocalyptic number.

1625473980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625473980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2783309760).

1625473980 is an abundant number, since it is smaller than the sum of its proper divisors (3941145540).

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

1625473980 is a wasteful number, since it uses less digits than its factorization.

1625473980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1625473980 is about 40317.1673112088. The cubic root of 1625473980 is about 1175.7816389655.

The spelling of 1625473980 in words is "one billion, six hundred twenty-five million, four hundred seventy-three thousand, nine hundred eighty".