625402271 has 8 divisors (see below), whose sum is σ = 708958320. Its totient is φ = 546910272.

The previous prime is 625402259. The next prime is 625402367. The reversal of 625402271 is 172204526.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 625402271 - 2⁶ = 625402207 is a prime.

It is a super-2 number, since 2×625402271² = 782256001143914882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625404271) 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, 1265750 + ... + 1266243.

It is an arithmetic number, because the mean of its divisors is an integer number (88619790).

Almost surely, 2^625402271 is an apocalyptic number.

625402271 is a deficient number, since it is larger than the sum of its proper divisors (83556049).

625402271 is a wasteful number, since it uses less digits than its factorization.

625402271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532025.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 625402271 is about 25008.0441258408. The cubic root of 625402271 is about 855.1713669936.

Adding to 625402271 its reverse (172204526), we get a palindrome (797606797).

The spelling of 625402271 in words is "six hundred twenty-five million, four hundred two thousand, two hundred seventy-one".