1225192541 has 2 divisors, whose sum is σ = 1225192542. Its totient is φ = 1225192540.

The previous prime is 1225192531. The next prime is 1225192603. The reversal of 1225192541 is 1452915221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009396441 + 215796100 = 31771^2 + 14690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225192541 - 2¹⁸ = 1224930397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225192498 and 1225192507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225192531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612596270 + 612596271.

It is an arithmetic number, because the mean of its divisors is an integer number (612596271).

Almost surely, 2^1225192541 is an apocalyptic number.

It is an amenable number.

1225192541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225192541 is an equidigital number, since it uses as much as digits as its factorization.

1225192541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 32.

The square root of 1225192541 is about 35002.7504776410. The cubic root of 1225192541 is about 1070.0435365288.

The spelling of 1225192541 in words is "one billion, two hundred twenty-five million, one hundred ninety-two thousand, five hundred forty-one".