2251025213 has 4 divisors (see below), whose sum is σ = 2251133760. Its totient is φ = 2250916668.

The previous prime is 2251025207. The next prime is 2251025243. The reversal of 2251025213 is 3125201522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2251025213 - 2¹² = 2251021117 is a prime.

It is a super-2 number, since 2×2251025213² = 10134229019123390738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251025243) 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, 12395 + ... + 68232.

It is an arithmetic number, because the mean of its divisors is an integer number (562783440).

Almost surely, 2^2251025213 is an apocalyptic number.

It is an amenable number.

2251025213 is a deficient number, since it is larger than the sum of its proper divisors (108547).

2251025213 is an equidigital number, since it uses as much as digits as its factorization.

2251025213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108546.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2251025213 is about 47444.9703656773. The cubic root of 2251025213 is about 1310.5696904502.

Adding to 2251025213 its reverse (3125201522), we get a palindrome (5376226735).

The spelling of 2251025213 in words is "two billion, two hundred fifty-one million, twenty-five thousand, two hundred thirteen".