1254245161 has 6 divisors (see below), whose sum is σ = 1358147310. Its totient is φ = 1157764608.

The previous prime is 1254245147. The next prime is 1254245173. The reversal of 1254245161 is 1615424521.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 26163225 + 1228081936 = 5115^2 + 35044^2 .

It is not a de Polignac number, because 1254245161 - 2¹³ = 1254236969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1254345161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3710616 + ... + 3710953.

It is an arithmetic number, because the mean of its divisors is an integer number (226357885).

Almost surely, 2^1254245161 is an apocalyptic number.

It is an amenable number.

1254245161 is a deficient number, since it is larger than the sum of its proper divisors (103902149).

1254245161 is an equidigital number, since it uses as much as digits as its factorization.

1254245161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7421595 (or 7421582 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 1254245161 is about 35415.3238161110. The cubic root of 1254245161 is about 1078.4354234209.

Adding to 1254245161 its reverse (1615424521), we get a palindrome (2869669682).

The spelling of 1254245161 in words is "one billion, two hundred fifty-four million, two hundred forty-five thousand, one hundred sixty-one".