1225701461 has 2 divisors, whose sum is σ = 1225701462. Its totient is φ = 1225701460.

The previous prime is 1225701413. The next prime is 1225701473. The reversal of 1225701461 is 1641075221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1032658225 + 193043236 = 32135^2 + 13894^2 .

It is an emirp because it is prime and its reverse (1641075221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1225701461 - 2⁶ = 1225701397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225701481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612850730 + 612850731.

It is an arithmetic number, because the mean of its divisors is an integer number (612850731).

Almost surely, 2^1225701461 is an apocalyptic number.

It is an amenable number.

1225701461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225701461 is an equidigital number, since it uses as much as digits as its factorization.

1225701461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1225701461 is about 35010.0194372982. The cubic root of 1225701461 is about 1070.1916741086.

Adding to 1225701461 its reverse (1641075221), we get a palindrome (2866776682).

The spelling of 1225701461 in words is "one billion, two hundred twenty-five million, seven hundred one thousand, four hundred sixty-one".