625620413 has 4 divisors (see below), whose sum is σ = 682495008. Its totient is φ = 568745820.

The previous prime is 625620409. The next prime is 625620421. The reversal of 625620413 is 314026526.

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 625620413 - 2² = 625620409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625620313) 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, 28437281 + ... + 28437302.

It is an arithmetic number, because the mean of its divisors is an integer number (170623752).

Almost surely, 2^625620413 is an apocalyptic number.

It is an amenable number.

625620413 is a deficient number, since it is larger than the sum of its proper divisors (56874595).

625620413 is a wasteful number, since it uses less digits than its factorization.

625620413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56874594.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 625620413 is about 25012.4051822291. The cubic root of 625620413 is about 855.2707841291.

Adding to 625620413 its reverse (314026526), we get a palindrome (939646939).

The spelling of 625620413 in words is "six hundred twenty-five million, six hundred twenty thousand, four hundred thirteen".