1625057633 has 4 divisors (see below), whose sum is σ = 1639438788. Its totient is φ = 1610676480.

The previous prime is 1625057627. The next prime is 1625057641. The reversal of 1625057633 is 3367505261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3367505261 = 19 ⋅177237119.

It can be written as a sum of positive squares in 2 ways, for example, as 28815424 + 1596242209 = 5368^2 + 39953^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625057633 - 2²⁸ = 1356622177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625057233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7190408 + ... + 7190633.

It is an arithmetic number, because the mean of its divisors is an integer number (409859697).

Almost surely, 2^1625057633 is an apocalyptic number.

It is an amenable number.

1625057633 is a deficient number, since it is larger than the sum of its proper divisors (14381155).

1625057633 is a wasteful number, since it uses less digits than its factorization.

1625057633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14381154.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 1625057633 is about 40312.0035845404. The cubic root of 1625057633 is about 1175.6812426163.

The spelling of 1625057633 in words is "one billion, six hundred twenty-five million, fifty-seven thousand, six hundred thirty-three".