155252525456444 has 24 divisors (see below), whose sum is σ = 292591644365328. Its totient is φ = 71654926919040.

The previous prime is 155252525456411. The next prime is 155252525456471. The reversal of 155252525456444 is 444654525252551.

It is a happy number.

It is a super-2 number, since 2×155252525456444² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71533784 + ... + 73672160.

It is an arithmetic number, because the mean of its divisors is an integer number (12191318515222).

Almost surely, 2^{155252525456444} is an apocalyptic number.

It is an amenable number.

155252525456444 is a deficient number, since it is larger than the sum of its proper divisors (137339118908884).

155252525456444 is a wasteful number, since it uses less digits than its factorization.

155252525456444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534605 (or 3534603 counting only the distinct ones).

The product of its digits is 192000000, while the sum is 59.

The spelling of 155252525456444 in words is "one hundred fifty-five trillion, two hundred fifty-two billion, five hundred twenty-five million, four hundred fifty-six thousand, four hundred forty-four".