145925198 has 4 divisors (see below), whose sum is σ = 218887800. Its totient is φ = 72962598.

The previous prime is 145925183. The next prime is 145925203. The reversal of 145925198 is 891529541.

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

It is a super-2 number, since 2×145925198² = 42588326822678408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36481298 + ... + 36481301.

It is an arithmetic number, because the mean of its divisors is an integer number (54721950).

Almost surely, 2^145925198 is an apocalyptic number.

145925198 is a deficient number, since it is larger than the sum of its proper divisors (72962602).

145925198 is an equidigital number, since it uses as much as digits as its factorization.

145925198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72962601.

The product of its digits is 129600, while the sum is 44.

The square root of 145925198 is about 12079.9502482419. The cubic root of 145925198 is about 526.4738004662.

The spelling of 145925198 in words is "one hundred forty-five million, nine hundred twenty-five thousand, one hundred ninety-eight".