190145425 has 12 divisors (see below), whose sum is σ = 249650316. Its totient is φ = 143168000.

The previous prime is 190145411. The next prime is 190145429. The reversal of 190145425 is 524541091.

190145425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 36481 + 190108944 = 191^2 + 13788^2 .

It is a de Polignac number, because none of the positive numbers 2^k-190145425 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190145429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223276 + ... + 224125.

It is an arithmetic number, because the mean of its divisors is an integer number (20804193).

Almost surely, 2^190145425 is an apocalyptic number.

It is an amenable number.

190145425 is a deficient number, since it is larger than the sum of its proper divisors (59504891).

190145425 is a wasteful number, since it uses less digits than its factorization.

190145425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447428 (or 447423 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 190145425 is about 13789.3228622728. The cubic root of 190145425 is about 575.0363430085.

The spelling of 190145425 in words is "one hundred ninety million, one hundred forty-five thousand, four hundred twenty-five".