625877257 has 4 divisors (see below), whose sum is σ = 626018176. Its totient is φ = 625736340.

The previous prime is 625877183. The next prime is 625877261. The reversal of 625877257 is 752778526.

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 625877257 - 2⁷ = 625877129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625877257.

It is not an unprimeable number, because it can be changed into a prime (625877267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63573 + ... + 72754.

It is an arithmetic number, because the mean of its divisors is an integer number (156504544).

Almost surely, 2^625877257 is an apocalyptic number.

It is an amenable number.

625877257 is a deficient number, since it is larger than the sum of its proper divisors (140919).

625877257 is a wasteful number, since it uses less digits than its factorization.

625877257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140918.

The product of its digits is 1646400, while the sum is 49.

The square root of 625877257 is about 25017.5389876782. The cubic root of 625877257 is about 855.3878098901.

The spelling of 625877257 in words is "six hundred twenty-five million, eight hundred seventy-seven thousand, two hundred fifty-seven".