158225399 has 4 divisors (see below), whose sum is σ = 160819320. Its totient is φ = 155631480.

The previous prime is 158225329. The next prime is 158225401. The reversal of 158225399 is 993522851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158225399 - 2¹⁶ = 158159863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158225329) 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, 1296869 + ... + 1296990.

It is an arithmetic number, because the mean of its divisors is an integer number (40204830).

Almost surely, 2^158225399 is an apocalyptic number.

158225399 is a deficient number, since it is larger than the sum of its proper divisors (2593921).

158225399 is an equidigital number, since it uses as much as digits as its factorization.

158225399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593920.

The product of its digits is 194400, while the sum is 44.

The square root of 158225399 is about 12578.7677854391. The cubic root of 158225399 is about 540.8689701270.

The spelling of 158225399 in words is "one hundred fifty-eight million, two hundred twenty-five thousand, three hundred ninety-nine".