145125554 has 24 divisors (see below), whose sum is σ = 258016428. Its totient is φ = 61020960.

The previous prime is 145125523. The next prime is 145125557. The reversal of 145125554 is 455521541.

It can be written as a sum of positive squares in 2 ways, for example, as 143448529 + 1677025 = 11977^2 + 1295^2 .

It is a super-3 number, since 3×145125554³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 145125554.

It is not an unprimeable number, because it can be changed into a prime (145125557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8777 + ... + 19164.

Almost surely, 2^145125554 is an apocalyptic number.

145125554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145125554 is a deficient number, since it is larger than the sum of its proper divisors (112890874).

145125554 is a wasteful number, since it uses less digits than its factorization.

145125554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28010 (or 28003 counting only the distinct ones).

The product of its digits is 20000, while the sum is 32.

The square root of 145125554 is about 12046.8067968238. The cubic root of 145125554 is about 525.5103777505.

The spelling of 145125554 in words is "one hundred forty-five million, one hundred twenty-five thousand, five hundred fifty-four".