145225516 has 18 divisors (see below), whose sum is σ = 256275348. Its totient is φ = 72009000.

The previous prime is 145225439. The next prime is 145225541. The reversal of 145225516 is 615522541.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63391 + ... + 65641.

Almost surely, 2^145225516 is an apocalyptic number.

It is an amenable number.

145225516 is a deficient number, since it is larger than the sum of its proper divisors (111049832).

145225516 is a wasteful number, since it uses less digits than its factorization.

145225516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509 (or 2380 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 145225516 is about 12050.9549829049. The cubic root of 145225516 is about 525.6310066599.

The spelling of 145225516 in words is "one hundred forty-five million, two hundred twenty-five thousand, five hundred sixteen".