155143025 has 12 divisors (see below), whose sum is σ = 193295664. Its totient is φ = 123522000.

The previous prime is 155142983. The next prime is 155143033. The reversal of 155143025 is 520341551.

It is not a de Polignac number, because 155143025 - 2²⁶ = 88034161 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155142985 and 155143003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9431 + ... + 19980.

It is an arithmetic number, because the mean of its divisors is an integer number (16107972).

Almost surely, 2^155143025 is an apocalyptic number.

It is an amenable number.

155143025 is a deficient number, since it is larger than the sum of its proper divisors (38152639).

155143025 is a wasteful number, since it uses less digits than its factorization.

155143025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29632 (or 29627 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155143025 is about 12455.6422957630. The cubic root of 155143025 is about 537.3337073459. Note that the first 3 decimals are identical.

Adding to 155143025 its reverse (520341551), we get a palindrome (675484576).

The spelling of 155143025 in words is "one hundred fifty-five million, one hundred forty-three thousand, twenty-five".