1625356224 has 168 divisors, whose sum is σ = 4780714848. Its totient is φ = 527800320.

The previous prime is 1625356223. The next prime is 1625356307. The reversal of 1625356224 is 4226535261.

1625356224 is a `hidden beast` number, since 1 + 6 + 25 + 3 + 5 + 622 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625356223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5867574 + ... + 5867850.

It is an arithmetic number, because the mean of its divisors is an integer number (28456636).

Almost surely, 2^1625356224 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 1625356224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390357424).

1625356224 is an abundant number, since it is smaller than the sum of its proper divisors (3155358624).

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

1625356224 is a wasteful number, since it uses less digits than its factorization.

1625356224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 510 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1625356224 is about 40315.7069143033. The cubic root of 1625356224 is about 1175.7532454655.

The spelling of 1625356224 in words is "one billion, six hundred twenty-five million, three hundred fifty-six thousand, two hundred twenty-four".