1625463625 has 32 divisors (see below), whose sum is σ = 2095790112. Its totient is φ = 1257984000.

The previous prime is 1625463611. The next prime is 1625463673. The reversal of 1625463625 is 5263645261.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 705008704 + 920454921 = 26552^2 + 30339^2 .

It is not a de Polignac number, because 1625463625 - 2⁹ = 1625463113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481945 + ... + 485305.

It is an arithmetic number, because the mean of its divisors is an integer number (65493441).

Almost surely, 2^1625463625 is an apocalyptic number.

It is an amenable number.

1625463625 is a deficient number, since it is larger than the sum of its proper divisors (470326487).

1625463625 is an equidigital number, since it uses as much as digits as its factorization.

1625463625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3492 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 1625463625 is about 40317.0388917639. The cubic root of 1625463625 is about 1175.7791422077.

The spelling of 1625463625 in words is "one billion, six hundred twenty-five million, four hundred sixty-three thousand, six hundred twenty-five".