625430661 has 8 divisors (see below), whose sum is σ = 834375264. Its totient is φ = 416719920.

The previous prime is 625430633. The next prime is 625430681. The reversal of 625430661 is 166034526.

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

It is not a de Polignac number, because 625430661 - 2¹¹ = 625428613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625430681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52126 + ... + 62991.

It is an arithmetic number, because the mean of its divisors is an integer number (104296908).

Almost surely, 2^625430661 is an apocalyptic number.

It is an amenable number.

625430661 is a deficient number, since it is larger than the sum of its proper divisors (208944603).

625430661 is a wasteful number, since it uses less digits than its factorization.

625430661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116931.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 625430661 is about 25008.6117367598. The cubic root of 625430661 is about 855.1843069039.

The spelling of 625430661 in words is "six hundred twenty-five million, four hundred thirty thousand, six hundred sixty-one".