625694897 has 4 divisors (see below), whose sum is σ = 629533680. Its totient is φ = 621856116.

The previous prime is 625694893. The next prime is 625694903. The reversal of 625694897 is 798496526.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 625694897 - 2² = 625694893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625694893) 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, 1919147 + ... + 1919472.

It is an arithmetic number, because the mean of its divisors is an integer number (157383420).

Almost surely, 2^625694897 is an apocalyptic number.

It is an amenable number.

625694897 is a deficient number, since it is larger than the sum of its proper divisors (3838783).

625694897 is a wasteful number, since it uses less digits than its factorization.

625694897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838782.

The product of its digits is 6531840, while the sum is 56.

The square root of 625694897 is about 25013.8940790913. The cubic root of 625694897 is about 855.3047245504.

The spelling of 625694897 in words is "six hundred twenty-five million, six hundred ninety-four thousand, eight hundred ninety-seven".