1225314557 has 2 divisors, whose sum is σ = 1225314558. Its totient is φ = 1225314556.

The previous prime is 1225314529. The next prime is 1225314589. The reversal of 1225314557 is 7554135221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754381156 + 470933401 = 27466^2 + 21701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225314557 - 2²⁶ = 1158205693 is a prime.

It is a super-2 number, since 2×1225314557² = 3002791527192212498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225344557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612657278 + 612657279.

It is an arithmetic number, because the mean of its divisors is an integer number (612657279).

Almost surely, 2^1225314557 is an apocalyptic number.

It is an amenable number.

1225314557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225314557 is an equidigital number, since it uses as much as digits as its factorization.

1225314557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 35.

The square root of 1225314557 is about 35004.4933829930. The cubic root of 1225314557 is about 1070.0790569590.

Adding to 1225314557 its reverse (7554135221), we get a palindrome (8779449778).

The spelling of 1225314557 in words is "one billion, two hundred twenty-five million, three hundred fourteen thousand, five hundred fifty-seven".