1625211043 has 4 divisors (see below), whose sum is σ = 1628548720. Its totient is φ = 1621873368.

The previous prime is 1625211031. The next prime is 1625211059. The reversal of 1625211043 is 3401125261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3401125261 = 73 ⋅46590757.

It is a cyclic number.

It is not a de Polignac number, because 1625211043 - 2¹⁷ = 1625079971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1625210999 and 1625211017.

It is not an unprimeable number, because it can be changed into a prime (1625211443) 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, 1668108 + ... + 1669081.

It is an arithmetic number, because the mean of its divisors is an integer number (407137180).

Almost surely, 2^1625211043 is an apocalyptic number.

1625211043 is a deficient number, since it is larger than the sum of its proper divisors (3337677).

1625211043 is an equidigital number, since it uses as much as digits as its factorization.

1625211043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337676.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1625211043 is about 40313.9063227567. The cubic root of 1625211043 is about 1175.7182373215.

The spelling of 1625211043 in words is "one billion, six hundred twenty-five million, two hundred eleven thousand, forty-three".