625081377 has 16 divisors (see below), whose sum is σ = 839592000. Its totient is φ = 413657664.

The previous prime is 625081363. The next prime is 625081393. The reversal of 625081377 is 773180526.

It is not a de Polignac number, because 625081377 - 2¹⁰ = 625080353 is a prime.

It is a super-2 number, since 2×625081377² = 781453455744432258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (625081337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266074 + ... + 268412.

It is an arithmetic number, because the mean of its divisors is an integer number (52474500).

Almost surely, 2^625081377 is an apocalyptic number.

It is an amenable number.

625081377 is a deficient number, since it is larger than the sum of its proper divisors (214510623).

625081377 is a wasteful number, since it uses less digits than its factorization.

625081377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 625081377 is about 25001.6274870257. The cubic root of 625081377 is about 855.0250791180.

The spelling of 625081377 in words is "six hundred twenty-five million, eighty-one thousand, three hundred seventy-seven".