1011225541 has 2 divisors, whose sum is σ = 1011225542. Its totient is φ = 1011225540.

The previous prime is 1011225533. The next prime is 1011225559. The reversal of 1011225541 is 1455221101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970073316 + 41152225 = 31146^2 + 6415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011225541 - 2³ = 1011225533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011225511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505612770 + 505612771.

It is an arithmetic number, because the mean of its divisors is an integer number (505612771).

Almost surely, 2^1011225541 is an apocalyptic number.

It is an amenable number.

1011225541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011225541 is an equidigital number, since it uses as much as digits as its factorization.

1011225541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1011225541 is about 31799.7726564200. The cubic root of 1011225541 is about 1003.7279322515.

Adding to 1011225541 its reverse (1455221101), we get a palindrome (2466446642).

It can be divided in two parts, 10112 and 25541, that added together give a palindrome (35653).

The spelling of 1011225541 in words is "one billion, eleven million, two hundred twenty-five thousand, five hundred forty-one".