1625865472 has 108 divisors (see below), whose sum is σ = 4118790816. Its totient is φ = 633400320.

The previous prime is 1625865457. The next prime is 1625865487. The reversal of 1625865472 is 2745685261.

It is an interprime number because it is at equal distance from previous prime (1625865457) and next prime (1625865487).

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, 132093 + ... + 143875.

It is an arithmetic number, because the mean of its divisors is an integer number (38136952).

Almost surely, 2^1625865472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1625865472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059395408).

1625865472 is an abundant number, since it is smaller than the sum of its proper divisors (2492925344).

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

1625865472 is a wasteful number, since it uses less digits than its factorization.

1625865472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11824 (or 11803 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 1625865472 is about 40322.0221715132. The cubic root of 1625865472 is about 1175.8760262358.

The spelling of 1625865472 in words is "one billion, six hundred twenty-five million, eight hundred sixty-five thousand, four hundred seventy-two".