145025140 has 24 divisors (see below), whose sum is σ = 327980520. Its totient is φ = 53547648.

The previous prime is 145025131. The next prime is 145025149. The reversal of 145025140 is 41520541.

It is an interprime number because it is at equal distance from previous prime (145025131) and next prime (145025149).

It can be written as a sum of positive squares in 4 ways, for example, as 22524516 + 122500624 = 4746^2 + 11068^2 .

It is a super-3 number, since 3×145025140³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145025149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278635 + ... + 279154.

It is an arithmetic number, because the mean of its divisors is an integer number (13665855).

Almost surely, 2^145025140 is an apocalyptic number.

145025140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145025140 is an abundant number, since it is smaller than the sum of its proper divisors (182955380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145025140 is a wasteful number, since it uses less digits than its factorization.

145025140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557811 (or 557809 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 145025140 is about 12042.6384152311. The cubic root of 145025140 is about 525.3891476095.

Adding to 145025140 its reverse (41520541), we get a palindrome (186545681).

The spelling of 145025140 in words is "one hundred forty-five million, twenty-five thousand, one hundred forty".