1625660160 has 144 divisors (see below), whose sum is σ = 5211709440. Its totient is φ = 431861760.

The previous prime is 1625660147. The next prime is 1625660167. The reversal of 1625660160 is 610665261.

It is a super-2 number, since 2×1625660160² = 5285541911622451200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1625660167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270401 + ... + 1271679.

Almost surely, 2^1625660160 is an apocalyptic number.

1625660160 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 1625660160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2605854720).

1625660160 is an abundant number, since it is smaller than the sum of its proper divisors (3586049280).

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

1625660160 is a wasteful number, since it uses less digits than its factorization.

1625660160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1625660160 is about 40319.4761870737. The cubic root of 1625660160 is about 1175.8265281632.

The spelling of 1625660160 in words is "one billion, six hundred twenty-five million, six hundred sixty thousand, one hundred sixty".