1625345338 has 4 divisors (see below), whose sum is σ = 2438018010. Its totient is φ = 812672668.

The previous prime is 1625345321. The next prime is 1625345353. The reversal of 1625345338 is 8335435261.

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

It can be written as a sum of positive squares in only one way, i.e., 1539542169 + 85803169 = 39237^2 + 9263^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1625345338.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406336333 + ... + 406336336.

Almost surely, 2^1625345338 is an apocalyptic number.

1625345338 is a deficient number, since it is larger than the sum of its proper divisors (812672672).

1625345338 is an equidigital number, since it uses as much as digits as its factorization.

1625345338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812672671.

The product of its digits is 259200, while the sum is 40.

The square root of 1625345338 is about 40315.5719046623. The cubic root of 1625345338 is about 1175.7506205480.

The spelling of 1625345338 in words is "one billion, six hundred twenty-five million, three hundred forty-five thousand, three hundred thirty-eight".