1625804460 has 240 divisors, whose sum is σ = 5860318464. Its totient is φ = 369608832.

The previous prime is 1625804459. The next prime is 1625804471. The reversal of 1625804460 is 644085261.

1625804460 is a `hidden beast` number, since 16 + 2 + 580 + 4 + 4 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3481147 + ... + 3481613.

Almost surely, 2^1625804460 is an apocalyptic number.

1625804460 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 1625804460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2930159232).

1625804460 is an abundant number, since it is smaller than the sum of its proper divisors (4234514004).

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

1625804460 is a wasteful number, since it uses less digits than its factorization.

1625804460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1625804460 is about 40321.2656051369. The cubic root of 1625804460 is about 1175.8613174654.

The spelling of 1625804460 in words is "one billion, six hundred twenty-five million, eight hundred four thousand, four hundred sixty".