625071621 has 16 divisors (see below), whose sum is σ = 880680960. Its totient is φ = 393547440.

The previous prime is 625071619. The next prime is 625071641. The reversal of 625071621 is 126170526.

It is not a de Polignac number, because 625071621 - 2¹ = 625071619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625071641) 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, 51885 + ... + 62786.

It is an arithmetic number, because the mean of its divisors is an integer number (55042560).

Almost surely, 2^625071621 is an apocalyptic number.

It is an amenable number.

625071621 is a deficient number, since it is larger than the sum of its proper divisors (255609339).

625071621 is a wasteful number, since it uses less digits than its factorization.

625071621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114776.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 625071621 is about 25001.4323789658. The cubic root of 625071621 is about 855.0206308075.

The spelling of 625071621 in words is "six hundred twenty-five million, seventy-one thousand, six hundred twenty-one".