2231425551 has 4 divisors (see below), whose sum is σ = 2975234072. Its totient is φ = 1487617032.

The previous prime is 2231425549. The next prime is 2231425571. The reversal of 2231425551 is 1555241322.

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

It is not a de Polignac number, because 2231425551 - 2¹ = 2231425549 is a prime.

It is a super-3 number, since 3×2231425551³ (a number of 29 digits) contains 333 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 (2231425571) 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, 371904256 + ... + 371904261.

It is an arithmetic number, because the mean of its divisors is an integer number (743808518).

Almost surely, 2^2231425551 is an apocalyptic number.

2231425551 is a deficient number, since it is larger than the sum of its proper divisors (743808521).

2231425551 is an equidigital number, since it uses as much as digits as its factorization.

2231425551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743808520.

The product of its digits is 12000, while the sum is 30.

The square root of 2231425551 is about 47237.9672615154. The cubic root of 2231425551 is about 1306.7548898404.

Adding to 2231425551 its reverse (1555241322), we get a palindrome (3786666873).

The spelling of 2231425551 in words is "two billion, two hundred thirty-one million, four hundred twenty-five thousand, five hundred fifty-one".