145428125 has 24 divisors (see below), whose sum is σ = 183503880. Its totient is φ = 115240000.

The previous prime is 145428121. The next prime is 145428137. The reversal of 145428125 is 521824541.

145428125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 145395364 + 32761 = 12058^2 + 181^2 .

It is not a de Polignac number, because 145428125 - 2² = 145428121 is a prime.

It is a super-2 number, since 2×145428125² = 42298679082031250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145428091 and 145428100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145428121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 540491 + ... + 540759.

It is an arithmetic number, because the mean of its divisors is an integer number (7645995).

Almost surely, 2^145428125 is an apocalyptic number.

It is an amenable number.

145428125 is a deficient number, since it is larger than the sum of its proper divisors (38075755).

145428125 is an frugal number, since it uses more digits than its factorization.

145428125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 447 counting only the distinct ones).

The product of its digits is 12800, while the sum is 32.

The square root of 145428125 is about 12059.3583991853. The cubic root of 145428125 is about 525.8753349015.

The spelling of 145428125 in words is "one hundred forty-five million, four hundred twenty-eight thousand, one hundred twenty-five".