155115102525 has 24 divisors (see below), whose sum is σ = 256559739840. Its totient is φ = 82694903040.

The previous prime is 155115102509. The next prime is 155115102529. The reversal of 155115102525 is 525201511551.

It is not a de Polignac number, because 155115102525 - 2⁴ = 155115102509 is a prime.

It is a super-2 number, since 2×155115102525² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155115102529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225420 + ... + 600869.

It is an arithmetic number, because the mean of its divisors is an integer number (10689989160).

Almost surely, 2^155115102525 is an apocalyptic number.

155115102525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155115102525 is a deficient number, since it is larger than the sum of its proper divisors (101444637315).

155115102525 is a wasteful number, since it uses less digits than its factorization.

155115102525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828805 (or 828800 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 33.

The spelling of 155115102525 in words is "one hundred fifty-five billion, one hundred fifteen million, one hundred two thousand, five hundred twenty-five".