1625155760 has 80 divisors (see below), whose sum is σ = 3886417920. Its totient is φ = 631653120.

The previous prime is 1625155759. The next prime is 1625155793. The reversal of 1625155760 is 675515261.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1625155760² = 5282262488522355200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724721 + ... + 726959.

It is an arithmetic number, because the mean of its divisors is an integer number (48580224).

Almost surely, 2^1625155760 is an apocalyptic number.

1625155760 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 1625155760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1943208960).

1625155760 is an abundant number, since it is smaller than the sum of its proper divisors (2261262160).

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

1625155760 is a wasteful number, since it uses less digits than its factorization.

1625155760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506 (or 2500 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 1625155760 is about 40313.2206602251. The cubic root of 1625155760 is about 1175.7049061363.

The spelling of 1625155760 in words is "one billion, six hundred twenty-five million, one hundred fifty-five thousand, seven hundred sixty".