155225434 has 72 divisors (see below), whose sum is σ = 303152220. Its totient is φ = 59076864.

The previous prime is 155225417. The next prime is 155225479. The reversal of 155225434 is 434522551.

It can be written as a sum of positive squares in 6 ways, for example, as 92102409 + 63123025 = 9597^2 + 7945^2 .

Its product of digits (24000) is a multiple of the sum of its prime factors (192).

It is a junction number, because it is equal to n+sod(n) for n = 155225396 and 155225405.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1744062 + ... + 1744150.

Almost surely, 2^155225434 is an apocalyptic number.

155225434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

155225434 is a deficient number, since it is larger than the sum of its proper divisors (147926786).

155225434 is a wasteful number, since it uses less digits than its factorization.

155225434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 148 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 155225434 is about 12458.9499557547. The cubic root of 155225434 is about 537.4288309593.

Adding to 155225434 its reverse (434522551), we get a palindrome (589747985).

The spelling of 155225434 in words is "one hundred fifty-five million, two hundred twenty-five thousand, four hundred thirty-four".