1625063444 has 6 divisors (see below), whose sum is σ = 2843861034. Its totient is φ = 812531720.

The previous prime is 1625063443. The next prime is 1625063467. The reversal of 1625063444 is 4443605261.

It can be written as a sum of positive squares in only one way, i.e., 894010000 + 731053444 = 29900^2 + 27038^2 .

It is a super-2 number, since 2×1625063444² = 5281662394050282272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625063443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203132927 + ... + 203132934.

It is an arithmetic number, because the mean of its divisors is an integer number (473976839).

Almost surely, 2^1625063444 is an apocalyptic number.

It is an amenable number.

1625063444 is a deficient number, since it is larger than the sum of its proper divisors (1218797590).

1625063444 is a wasteful number, since it uses less digits than its factorization.

1625063444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406265865 (or 406265863 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 1625063444 is about 40312.0756597821. The cubic root of 1625063444 is about 1175.6826439769.

The spelling of 1625063444 in words is "one billion, six hundred twenty-five million, sixty-three thousand, four hundred forty-four".