625441945 has 8 divisors (see below), whose sum is σ = 751462920. Its totient is φ = 499731840.

The previous prime is 625441939. The next prime is 625441961. The reversal of 625441945 is 549144526.

It can be written as a sum of positive squares in 4 ways, for example, as 283450896 + 341991049 = 16836^2 + 18493^2 .

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

It is not a de Polignac number, because 625441945 - 2³ = 625441937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 625441898 and 625441907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73266 + ... + 81355.

It is an arithmetic number, because the mean of its divisors is an integer number (93932865).

Almost surely, 2^625441945 is an apocalyptic number.

It is an amenable number.

625441945 is a deficient number, since it is larger than the sum of its proper divisors (126020975).

625441945 is a wasteful number, since it uses less digits than its factorization.

625441945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155435.

The product of its digits is 172800, while the sum is 40.

The square root of 625441945 is about 25008.8373380291. The cubic root of 625441945 is about 855.1894499422.

The spelling of 625441945 in words is "six hundred twenty-five million, four hundred forty-one thousand, nine hundred forty-five".