1625065149 has 4 divisors (see below), whose sum is σ = 2166753536. Its totient is φ = 1083376764.

The previous prime is 1625065133. The next prime is 1625065181. The reversal of 1625065149 is 9415605261.

1625065149 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1625065149 - 2⁴ = 1625065133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625065109) 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, 270844189 + ... + 270844194.

It is an arithmetic number, because the mean of its divisors is an integer number (541688384).

Almost surely, 2^1625065149 is an apocalyptic number.

It is an amenable number.

1625065149 is a deficient number, since it is larger than the sum of its proper divisors (541688387).

1625065149 is an equidigital number, since it uses as much as digits as its factorization.

1625065149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541688386.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1625065149 is about 40312.0968072860. The cubic root of 1625065149 is about 1175.6830551482.

The spelling of 1625065149 in words is "one billion, six hundred twenty-five million, sixty-five thousand, one hundred forty-nine".