1625135146 has 8 divisors (see below), whose sum is σ = 2438313444. Its totient is φ = 812364000.

The previous prime is 1625135143. The next prime is 1625135203. The reversal of 1625135146 is 6415315261.

It can be written as a sum of positive squares in 2 ways, for example, as 1148193225 + 476941921 = 33885^2 + 21839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1625135143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91605 + ... + 107896.

Almost surely, 2^1625135146 is an apocalyptic number.

1625135146 is a deficient number, since it is larger than the sum of its proper divisors (813178298).

1625135146 is a wasteful number, since it uses less digits than its factorization.

1625135146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203576.

The product of its digits is 21600, while the sum is 34.

The square root of 1625135146 is about 40312.9649864656. The cubic root of 1625135146 is about 1175.6999351085.

The spelling of 1625135146 in words is "one billion, six hundred twenty-five million, one hundred thirty-five thousand, one hundred forty-six".