145818825 has 24 divisors (see below), whose sum is σ = 253778400. Its totient is φ = 73676160.

The previous prime is 145818821. The next prime is 145818833. The reversal of 145818825 is 528818541.

It is not a de Polignac number, because 145818825 - 2² = 145818821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145818821) 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, 49740 + ... + 52589.

It is an arithmetic number, because the mean of its divisors is an integer number (10574100).

Almost surely, 2^145818825 is an apocalyptic number.

145818825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145818825 is a deficient number, since it is larger than the sum of its proper divisors (107959575).

145818825 is a wasteful number, since it uses less digits than its factorization.

145818825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102361 (or 102356 counting only the distinct ones).

The product of its digits is 102400, while the sum is 42.

The square root of 145818825 is about 12075.5465714807. The cubic root of 145818825 is about 526.3458440162.

The spelling of 145818825 in words is "one hundred forty-five million, eight hundred eighteen thousand, eight hundred twenty-five".