145525251524 has 6 divisors (see below), whose sum is σ = 254669190174. Its totient is φ = 72762625760.

The previous prime is 145525251517. The next prime is 145525251551. The reversal of 145525251524 is 425152525541.

It can be written as a sum of positive squares in only one way, i.e., 93366913600 + 52158337924 = 305560^2 + 228382^2 .

It is a super-3 number, since 3×145525251524³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18190656437 + ... + 18190656444.

It is an arithmetic number, because the mean of its divisors is an integer number (42444865029).

Almost surely, 2^145525251524 is an apocalyptic number.

It is an amenable number.

145525251524 is a deficient number, since it is larger than the sum of its proper divisors (109143938650).

145525251524 is a wasteful number, since it uses less digits than its factorization.

145525251524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36381312885 (or 36381312883 counting only the distinct ones).

The product of its digits is 400000, while the sum is 41.

The spelling of 145525251524 in words is "one hundred forty-five billion, five hundred twenty-five million, two hundred fifty-one thousand, five hundred twenty-four".