2257432145 has 16 divisors (see below), whose sum is σ = 2724727680. Its totient is φ = 1795430784.

The previous prime is 2257432109. The next prime is 2257432147. The reversal of 2257432145 is 5412347522.

It is a cyclic number.

It is not a de Polignac number, because 2257432145 - 2²⁸ = 1988996689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2257432147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1462244 + ... + 1463786.

It is an arithmetic number, because the mean of its divisors is an integer number (170295480).

Almost surely, 2^2257432145 is an apocalyptic number.

It is an amenable number.

2257432145 is a deficient number, since it is larger than the sum of its proper divisors (467295535).

2257432145 is a wasteful number, since it uses less digits than its factorization.

2257432145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064.

The product of its digits is 67200, while the sum is 35.

The square root of 2257432145 is about 47512.4420020693. The cubic root of 2257432145 is about 1311.8119062302.

Adding to 2257432145 its reverse (5412347522), we get a palindrome (7669779667).

The spelling of 2257432145 in words is "two billion, two hundred fifty-seven million, four hundred thirty-two thousand, one hundred forty-five".