155225244 has 12 divisors (see below), whose sum is σ = 362192264. Its totient is φ = 51741744.

The previous prime is 155225209. The next prime is 155225263. The reversal of 155225244 is 442522551.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6467707 + ... + 6467730.

Almost surely, 2^155225244 is an apocalyptic number.

It is an amenable number.

155225244 is an abundant number, since it is smaller than the sum of its proper divisors (206967020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155225244 is a wasteful number, since it uses less digits than its factorization.

155225244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12935444 (or 12935442 counting only the distinct ones).

The product of its digits is 16000, while the sum is 30.

The square root of 155225244 is about 12458.9423307117. The cubic root of 155225244 is about 537.4286116835.

Adding to 155225244 its reverse (442522551), we get a palindrome (597747795).

It can be divided in two parts, 1552 and 25244, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 155225244 in words is "one hundred fifty-five million, two hundred twenty-five thousand, two hundred forty-four".