155256212425 has 24 divisors (see below), whose sum is σ = 196102236600. Its totient is φ = 121912750080.

The previous prime is 155256212417. The next prime is 155256212431. The reversal of 155256212425 is 524212652551.

It can be written as a sum of positive squares in 12 ways, for example, as 94217074704 + 61039137721 = 306948^2 + 247061^2 .

It is not a de Polignac number, because 155256212425 - 2³ = 155256212417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50161 + ... + 559489.

It is an arithmetic number, because the mean of its divisors is an integer number (8170926525).

Almost surely, 2^155256212425 is an apocalyptic number.

It is an amenable number.

155256212425 is a deficient number, since it is larger than the sum of its proper divisors (40846024175).

155256212425 is a wasteful number, since it uses less digits than its factorization.

155256212425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509565 (or 509560 counting only the distinct ones).

The product of its digits is 240000, while the sum is 40.

Adding to 155256212425 its reverse (524212652551), we get a palindrome (679468864976).

The spelling of 155256212425 in words is "one hundred fifty-five billion, two hundred fifty-six million, two hundred twelve thousand, four hundred twenty-five".