1625070720 has 512 divisors, whose sum is σ = 6514421760. Its totient is φ = 335462400.

The previous prime is 1625070697. The next prime is 1625070743. The reversal of 1625070720 is 270705261.

It is an interprime number because it is at equal distance from previous prime (1625070697) and next prime (1625070743).

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 63 ways as a sum of consecutive naturals, for example, 12405055 + ... + 12405185.

It is an arithmetic number, because the mean of its divisors is an integer number (12723480).

Almost surely, 2^1625070720 is an apocalyptic number.

1625070720 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 1625070720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3257210880).

1625070720 is an abundant number, since it is smaller than the sum of its proper divisors (4889351040).

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

1625070720 is a wasteful number, since it uses less digits than its factorization.

1625070720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 1625070720 is about 40312.1659055923. The cubic root of 1625070720 is about 1175.6843986272.

Adding to 1625070720 its reverse (270705261), we get a palindrome (1895775981).

The spelling of 1625070720 in words is "one billion, six hundred twenty-five million, seventy thousand, seven hundred twenty".