145215444525 has 12 divisors (see below), whose sum is σ = 240089535072. Its totient is φ = 77448237040.

The previous prime is 145215444481. The next prime is 145215444529. The reversal of 145215444525 is 525444512541.

It is not a de Polignac number, because 145215444525 - 2⁶ = 145215444461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145215444529) 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, 968102889 + ... + 968103038.

It is an arithmetic number, because the mean of its divisors is an integer number (20007461256).

Almost surely, 2^145215444525 is an apocalyptic number.

145215444525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145215444525 is a deficient number, since it is larger than the sum of its proper divisors (94874090547).

145215444525 is a wasteful number, since it uses less digits than its factorization.

145215444525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936205940 (or 1936205935 counting only the distinct ones).

The product of its digits is 640000, while the sum is 42.

The spelling of 145215444525 in words is "one hundred forty-five billion, two hundred fifteen million, four hundred forty-four thousand, five hundred twenty-five".