145025299 has 4 divisors (see below), whose sum is σ = 145164600. Its totient is φ = 144886000.

The previous prime is 145025297. The next prime is 145025359. The reversal of 145025299 is 992520541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992520541 = 23 ⋅43153067.

It is a cyclic number.

It is not a de Polignac number, because 145025299 - 2¹ = 145025297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145025297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68077 + ... + 70174.

It is an arithmetic number, because the mean of its divisors is an integer number (36291150).

Almost surely, 2^145025299 is an apocalyptic number.

145025299 is a deficient number, since it is larger than the sum of its proper divisors (139301).

145025299 is a wasteful number, since it uses less digits than its factorization.

145025299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139300.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 145025299 is about 12042.6450167727. The cubic root of 145025299 is about 525.3893396149.

The spelling of 145025299 in words is "one hundred forty-five million, twenty-five thousand, two hundred ninety-nine".