155225342031 has 16 divisors (see below), whose sum is σ = 208477432800. Its totient is φ = 102729215360.

The previous prime is 155225342021. The next prime is 155225342039. The reversal of 155225342031 is 130243522551.

It is a cyclic number.

It is not a de Polignac number, because 155225342031 - 2⁹ = 155225341519 is a prime.

It is a super-2 number, since 2×155225342031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155225341983 and 155225342001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155225342039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 674461 + ... + 874841.

It is an arithmetic number, because the mean of its divisors is an integer number (13029839550).

Almost surely, 2^155225342031 is an apocalyptic number.

155225342031 is a deficient number, since it is larger than the sum of its proper divisors (53252090769).

155225342031 is a wasteful number, since it uses less digits than its factorization.

155225342031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202266.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 155225342031 its reverse (130243522551), we get a palindrome (285468864582).

The spelling of 155225342031 in words is "one hundred fifty-five billion, two hundred twenty-five million, three hundred forty-two thousand, thirty-one".