155502425 has 48 divisors (see below), whose sum is σ = 220485888. Its totient is φ = 107923200.

The previous prime is 155502421. The next prime is 155502443. The reversal of 155502425 is 524205551.

It is not a de Polignac number, because 155502425 - 2² = 155502421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155502421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 530579 + ... + 530871.

It is an arithmetic number, because the mean of its divisors is an integer number (4593456).

Almost surely, 2^155502425 is an apocalyptic number.

It is an amenable number.

155502425 is a deficient number, since it is larger than the sum of its proper divisors (64983463).

155502425 is a wasteful number, since it uses less digits than its factorization.

155502425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 155502425 is about 12470.0611466023. The cubic root of 155502425 is about 537.7483114450.

Adding to 155502425 its reverse (524205551), we get a palindrome (679707976).

The spelling of 155502425 in words is "one hundred fifty-five million, five hundred two thousand, four hundred twenty-five".