155212025107 has 8 divisors (see below), whose sum is σ = 163650252800. Its totient is φ = 146800714824.

The previous prime is 155212025093. The next prime is 155212025123. The reversal of 155212025107 is 701520212551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155212025107 - 2¹⁹ = 155211500819 is a prime.

It is a super-2 number, since 2×155212025107² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155212025147) 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 7 ways as a sum of consecutive naturals, for example, 6717507 + ... + 6740572.

It is an arithmetic number, because the mean of its divisors is an integer number (20456281600).

Almost surely, 2^155212025107 is an apocalyptic number.

155212025107 is a deficient number, since it is larger than the sum of its proper divisors (8438227693).

155212025107 is a wasteful number, since it uses less digits than its factorization.

155212025107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13458705.

The product of its (nonzero) digits is 7000, while the sum is 31.

Adding to 155212025107 its reverse (701520212551), we get a palindrome (856732237658).

The spelling of 155212025107 in words is "one hundred fifty-five billion, two hundred twelve million, twenty-five thousand, one hundred seven".