1625024213 has 4 divisors (see below), whose sum is σ = 1627483308. Its totient is φ = 1622565120.

The previous prime is 1625024209. The next prime is 1625024227. The reversal of 1625024213 is 3124205261.

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: 3124205261 = 71 ⋅44002891.

It can be written as a sum of positive squares in 2 ways, for example, as 1403401444 + 221622769 = 37462^2 + 14887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625024213 - 2² = 1625024209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625024243) 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, 1228556 + ... + 1229877.

It is an arithmetic number, because the mean of its divisors is an integer number (406870827).

Almost surely, 2^1625024213 is an apocalyptic number.

It is an amenable number.

1625024213 is a deficient number, since it is larger than the sum of its proper divisors (2459095).

1625024213 is an equidigital number, since it uses as much as digits as its factorization.

1625024213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459094.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1625024213 is about 40311.5890656769. The cubic root of 1625024213 is about 1175.6731830998.

Adding to 1625024213 its reverse (3124205261), we get a palindrome (4749229474).

The spelling of 1625024213 in words is "one billion, six hundred twenty-five million, twenty-four thousand, two hundred thirteen".