155015551425 has 48 divisors (see below), whose sum is σ = 298432149120. Its totient is φ = 69527178240.

The previous prime is 155015551423. The next prime is 155015551459. The reversal of 155015551425 is 524155510551.

It is not a de Polignac number, because 155015551425 - 2¹ = 155015551423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155015551423) 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 47 ways as a sum of consecutive naturals, for example, 2757720 + ... + 2813369.

It is an arithmetic number, because the mean of its divisors is an integer number (6217336440).

Almost surely, 2^155015551425 is an apocalyptic number.

155015551425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155015551425 is a deficient number, since it is larger than the sum of its proper divisors (143416597695).

155015551425 is a wasteful number, since it uses less digits than its factorization.

155015551425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571162 (or 5571157 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 39.

The spelling of 155015551425 in words is "one hundred fifty-five billion, fifteen million, five hundred fifty-one thousand, four hundred twenty-five".