625009497 has 16 divisors (see below), whose sum is σ = 953776512. Its totient is φ = 356630400.

The previous prime is 625009493. The next prime is 625009499. The reversal of 625009497 is 794900526.

It is not a de Polignac number, because 625009497 - 2² = 625009493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625009493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6508 + ... + 35949.

It is an arithmetic number, because the mean of its divisors is an integer number (59611032).

Almost surely, 2^625009497 is an apocalyptic number.

It is an amenable number.

625009497 is a deficient number, since it is larger than the sum of its proper divisors (328767015).

625009497 is a wasteful number, since it uses less digits than its factorization.

625009497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43168.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 625009497 is about 25000.1899392785. The cubic root of 625009497 is about 854.9923038875.

The spelling of 625009497 in words is "six hundred twenty-five million, nine thousand, four hundred ninety-seven".