155125125503 has 2 divisors, whose sum is σ = 155125125504. Its totient is φ = 155125125502.

The previous prime is 155125125497. The next prime is 155125125539. The reversal of 155125125503 is 305521521551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155125125503 - 2¹⁴ = 155125109119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155125125583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77562562751 + 77562562752.

It is an arithmetic number, because the mean of its divisors is an integer number (77562562752).

Almost surely, 2^155125125503 is an apocalyptic number.

155125125503 is a deficient number, since it is larger than the sum of its proper divisors (1).

155125125503 is an equidigital number, since it uses as much as digits as its factorization.

155125125503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 155125125503 in words is "one hundred fifty-five billion, one hundred twenty-five million, one hundred twenty-five thousand, five hundred three".