1625861016 has 48 divisors (see below), whose sum is σ = 4742097360. Its totient is φ = 500264640.

The previous prime is 1625860991. The next prime is 1625861023. The reversal of 1625861016 is 6101685261.

1625861016 is a `hidden beast` number, since 1 + 6 + 25 + 8 + 610 + 16 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 867580 + ... + 869451.

It is an arithmetic number, because the mean of its divisors is an integer number (98793695).

Almost surely, 2^1625861016 is an apocalyptic number.

It is an amenable number.

1625861016 is an abundant number, since it is smaller than the sum of its proper divisors (3116236344).

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

1625861016 is a wasteful number, since it uses less digits than its factorization.

1625861016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737056 (or 1737049 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1625861016 is about 40321.9669163100. The cubic root of 1625861016 is about 1175.8749519959.

It can be divided in two parts, 1625 and 861016, that added together give a triangular number (862641 = T₁₃₁₃).

The spelling of 1625861016 in words is "one billion, six hundred twenty-five million, eight hundred sixty-one thousand, sixteen".