155401225541 has 2 divisors, whose sum is σ = 155401225542. Its totient is φ = 155401225540.

The previous prime is 155401225501. The next prime is 155401225561. The reversal of 155401225541 is 145522104551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142027228225 + 13373997316 = 376865^2 + 115646^2 .

It is a cyclic number.

It is not a de Polignac number, because 155401225541 - 2¹⁴ = 155401209157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155401225501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77700612770 + 77700612771.

It is an arithmetic number, because the mean of its divisors is an integer number (77700612771).

Almost surely, 2^155401225541 is an apocalyptic number.

It is an amenable number.

155401225541 is a deficient number, since it is larger than the sum of its proper divisors (1).

155401225541 is an equidigital number, since it uses as much as digits as its factorization.

155401225541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 155401225541 in words is "one hundred fifty-five billion, four hundred one million, two hundred twenty-five thousand, five hundred forty-one".