1625057772 has 96 divisors (see below), whose sum is σ = 4147046400. Its totient is φ = 492307200.

The previous prime is 1625057767. The next prime is 1625057773. The reversal of 1625057772 is 2777505261.

1625057772 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1625057773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3509613 + ... + 3510075.

It is an arithmetic number, because the mean of its divisors is an integer number (43198400).

Almost surely, 2^1625057772 is an apocalyptic number.

1625057772 is a gapful number since it is divisible by the number (12) 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 1625057772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073523200).

1625057772 is an abundant number, since it is smaller than the sum of its proper divisors (2521988628).

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

1625057772 is a wasteful number, since it uses less digits than its factorization.

1625057772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 1625057772 is about 40312.0053085926. The cubic root of 1625057772 is about 1175.6812761371.

The spelling of 1625057772 in words is "one billion, six hundred twenty-five million, fifty-seven thousand, seven hundred seventy-two".