2251425291 has 4 divisors (see below), whose sum is σ = 3001900392. Its totient is φ = 1500950192.

The previous prime is 2251425289. The next prime is 2251425301. The reversal of 2251425291 is 1925241522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2251425291 - 2¹ = 2251425289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251425091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375237546 + ... + 375237551.

It is an arithmetic number, because the mean of its divisors is an integer number (750475098).

Almost surely, 2^2251425291 is an apocalyptic number.

2251425291 is a deficient number, since it is larger than the sum of its proper divisors (750475101).

2251425291 is an equidigital number, since it uses as much as digits as its factorization.

2251425291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750475100.

The product of its digits is 14400, while the sum is 33.

The square root of 2251425291 is about 47449.1864103063. The cubic root of 2251425291 is about 1310.6473290060.

It can be divided in two parts, 225 and 1425291, that multiplied together give a triangular number (320690475 = T₂₅₃₂₅).

The spelling of 2251425291 in words is "two billion, two hundred fifty-one million, four hundred twenty-five thousand, two hundred ninety-one".