155047025 has 36 divisors (see below), whose sum is σ = 233413632. Its totient is φ = 101676960.

The previous prime is 155047007. The next prime is 155047037. The reversal of 155047025 is 520740551.

It is not a de Polignac number, because 155047025 - 2⁸ = 155046769 is a prime.

It is a super-2 number, since 2×155047025² = 48079159922701250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25424 + ... + 30926.

It is an arithmetic number, because the mean of its divisors is an integer number (6483712).

Almost surely, 2^155047025 is an apocalyptic number.

It is an amenable number.

155047025 is a deficient number, since it is larger than the sum of its proper divisors (78366607).

155047025 is a wasteful number, since it uses less digits than its factorization.

155047025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550 (or 5538 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 155047025 is about 12451.7880242156. The cubic root of 155047025 is about 537.2228533359. Note that the first 3 decimals are identical.

Adding to 155047025 its reverse (520740551), we get a palindrome (675787576).

The spelling of 155047025 in words is "one hundred fifty-five million, forty-seven thousand, twenty-five".