625381625 has 16 divisors (see below), whose sum is σ = 851430528. Its totient is φ = 454822000.

The previous prime is 625381621. The next prime is 625381643. The reversal of 625381625 is 526183526.

It is not a de Polignac number, because 625381625 - 2² = 625381621 is a prime.

It is a super-2 number, since 2×625381625² = 782204353775281250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625381621) 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, 226037 + ... + 228786.

It is an arithmetic number, because the mean of its divisors is an integer number (53214408).

Almost surely, 2^625381625 is an apocalyptic number.

It is an amenable number.

625381625 is a deficient number, since it is larger than the sum of its proper divisors (226048903).

625381625 is a wasteful number, since it uses less digits than its factorization.

625381625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454849 (or 454839 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 625381625 is about 25007.6313352544. The cubic root of 625381625 is about 855.1619564840.

It can be divided in two parts, 6253 and 81625, that added together give a palindrome (87878).

The spelling of 625381625 in words is "six hundred twenty-five million, three hundred eighty-one thousand, six hundred twenty-five".