145969825 has 12 divisors (see below), whose sum is σ = 181163008. Its totient is φ = 116672400.

The previous prime is 145969819. The next prime is 145969841. The reversal of 145969825 is 528969541.

It is not a de Polignac number, because 145969825 - 2⁷ = 145969697 is a prime.

It is a Duffinian number.

Its product of digits (777600) is a multiple of the sum of its prime factors (5184).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39820 + ... + 43330.

Almost surely, 2^145969825 is an apocalyptic number.

It is an amenable number.

145969825 is a deficient number, since it is larger than the sum of its proper divisors (35193183).

145969825 is a wasteful number, since it uses less digits than its factorization.

145969825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184 (or 5179 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

The square root of 145969825 is about 12081.7972586863. The cubic root of 145969825 is about 526.5274639228.

The spelling of 145969825 in words is "one hundred forty-five million, nine hundred sixty-nine thousand, eight hundred twenty-five".