155125990073 has 2 divisors, whose sum is σ = 155125990074. Its totient is φ = 155125990072.

The previous prime is 155125990051. The next prime is 155125990087. The reversal of 155125990073 is 370099521551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82715485609 + 72410504464 = 287603^2 + 269092^2 .

It is a cyclic number.

It is not a de Polignac number, because 155125990073 - 2²⁴ = 155109212857 is a prime.

It is a super-2 number, since 2×155125990073² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155125990043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77562995036 + 77562995037.

It is an arithmetic number, because the mean of its divisors is an integer number (77562995037).

Almost surely, 2^155125990073 is an apocalyptic number.

It is an amenable number.

155125990073 is a deficient number, since it is larger than the sum of its proper divisors (1).

155125990073 is an equidigital number, since it uses as much as digits as its factorization.

155125990073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 425250, while the sum is 47.

The spelling of 155125990073 in words is "one hundred fifty-five billion, one hundred twenty-five million, nine hundred ninety thousand, seventy-three".