155225752129 has 8 divisors (see below), whose sum is σ = 179899463808. Its totient is φ = 131176691520.

The previous prime is 155225752061. The next prime is 155225752139. The reversal of 155225752129 is 921257522551.

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

It is not a de Polignac number, because 155225752129 - 2³¹ = 153078268481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155225752139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156162232 + ... + 156163225.

It is an arithmetic number, because the mean of its divisors is an integer number (22487432976).

Almost surely, 2^155225752129 is an apocalyptic number.

It is an amenable number.

155225752129 is a deficient number, since it is larger than the sum of its proper divisors (24673711679).

155225752129 is an equidigital number, since it uses as much as digits as its factorization.

155225752129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312325535.

The product of its digits is 630000, while the sum is 46.

The spelling of 155225752129 in words is "one hundred fifty-five billion, two hundred twenty-five million, seven hundred fifty-two thousand, one hundred twenty-nine".