145121440325 has 24 divisors (see below), whose sum is σ = 184826503680. Its totient is φ = 112966358400.

The previous prime is 145121440307. The next prime is 145121440327. The reversal of 145121440325 is 523044121541.

It is not a de Polignac number, because 145121440325 - 2²⁰ = 145120391749 is a prime.

It is a super-2 number, since 2×145121440325² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145121440291 and 145121440300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145121440327) 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, 201692 + ... + 575258.

It is an arithmetic number, because the mean of its divisors is an integer number (7701104320).

Almost surely, 2^145121440325 is an apocalyptic number.

It is an amenable number.

145121440325 is a deficient number, since it is larger than the sum of its proper divisors (39705063355).

145121440325 is a wasteful number, since it uses less digits than its factorization.

145121440325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373997 (or 373992 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 145121440325 its reverse (523044121541), we get a palindrome (668165561866).

The spelling of 145121440325 in words is "one hundred forty-five billion, one hundred twenty-one million, four hundred forty thousand, three hundred twenty-five".