145317939625 has 16 divisors (see below), whose sum is σ = 181581089040. Its totient is φ = 116110569600.

The previous prime is 145317939589. The next prime is 145317939629. The reversal of 145317939625 is 526939713541.

It can be written as a sum of positive squares in 8 ways, for example, as 40110476176 + 105207463449 = 200276^2 + 324357^2 .

It is not a de Polignac number, because 145317939625 - 2⁷ = 145317939497 is a prime.

It is a super-2 number, since 2×145317939625² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145317939629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617382 + ... + 819631.

It is an arithmetic number, because the mean of its divisors is an integer number (11348818065).

Almost surely, 2^145317939625 is an apocalyptic number.

It is an amenable number.

145317939625 is a deficient number, since it is larger than the sum of its proper divisors (36263149415).

145317939625 is an equidigital number, since it uses as much as digits as its factorization.

145317939625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437837 (or 1437827 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 55.

The spelling of 145317939625 in words is "one hundred forty-five billion, three hundred seventeen million, nine hundred thirty-nine thousand, six hundred twenty-five".