625973855 has 32 divisors (see below), whose sum is σ = 855525888. Its totient is φ = 436377600.

The previous prime is 625973827. The next prime is 625973891. The reversal of 625973855 is 558379526.

It is not a de Polignac number, because 625973855 - 2¹⁶ = 625908319 is a prime.

It is a super-2 number, since 2×625973855² = 783686534287122050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78827 + ... + 86403.

It is an arithmetic number, because the mean of its divisors is an integer number (26735184).

Almost surely, 2^625973855 is an apocalyptic number.

625973855 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

625973855 is a deficient number, since it is larger than the sum of its proper divisors (229552033).

625973855 is a wasteful number, since it uses less digits than its factorization.

625973855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7667.

The product of its digits is 2268000, while the sum is 50.

The square root of 625973855 is about 25019.4695187568. The cubic root of 625973855 is about 855.4318145252.

The spelling of 625973855 in words is "six hundred twenty-five million, nine hundred seventy-three thousand, eight hundred fifty-five".