1252125461 has 2 divisors, whose sum is σ = 1252125462. Its totient is φ = 1252125460.

The previous prime is 1252125443. The next prime is 1252125487. The reversal of 1252125461 is 1645212521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067002225 + 185123236 = 32665^2 + 13606^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252125461 - 2²⁶ = 1185016597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252125421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626062730 + 626062731.

It is an arithmetic number, because the mean of its divisors is an integer number (626062731).

Almost surely, 2^1252125461 is an apocalyptic number.

It is an amenable number.

1252125461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252125461 is an equidigital number, since it uses as much as digits as its factorization.

1252125461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 1252125461 is about 35385.3848502457. The cubic root of 1252125461 is about 1077.8275548740.

Adding to 1252125461 its reverse (1645212521), we get a palindrome (2897337982).

The spelling of 1252125461 in words is "one billion, two hundred fifty-two million, one hundred twenty-five thousand, four hundred sixty-one".