625516641 has 16 divisors (see below), whose sum is σ = 927376320. Its totient is φ = 416702880.

The previous prime is 625516637. The next prime is 625516673. The reversal of 625516641 is 146615526.

625516641 is a `hidden beast` number, since 6 + 2 + 5 + 5 + 1 + 6 + 641 = 666.

It is not a de Polignac number, because 625516641 - 2² = 625516637 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 625516596 and 625516605.

It is not an unprimeable number, because it can be changed into a prime (625516681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32166 + ... + 47808.

It is an arithmetic number, because the mean of its divisors is an integer number (57961020).

Almost surely, 2^625516641 is an apocalyptic number.

It is an amenable number.

625516641 is a deficient number, since it is larger than the sum of its proper divisors (301859679).

625516641 is a wasteful number, since it uses less digits than its factorization.

625516641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17133 (or 17127 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 625516641 is about 25010.3306855387. The cubic root of 625516641 is about 855.2234934368.

The spelling of 625516641 in words is "six hundred twenty-five million, five hundred sixteen thousand, six hundred forty-one".