620040025 has 12 divisors (see below), whose sum is σ = 838745424. Its totient is φ = 450938000.

The previous prime is 620040013. The next prime is 620040067. The reversal of 620040025 is 520040026.

It is not a de Polignac number, because 620040025 - 2⁹ = 620039513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 620039984 and 620040011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1127071 + ... + 1127620.

It is an arithmetic number, because the mean of its divisors is an integer number (69895452).

Almost surely, 2^620040025 is an apocalyptic number.

It is an amenable number.

620040025 is a deficient number, since it is larger than the sum of its proper divisors (218705399).

620040025 is a wasteful number, since it uses less digits than its factorization.

620040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254712 (or 2254707 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 620040025 is about 24900.6029043475. The cubic root of 620040025 is about 852.7202470696.

Subtracting from 620040025 its reverse (520040026), we obtain a palindrome (99999999).

It can be divided in two parts, 6200 and 40025, that added together give a square (46225 = 215²).

The spelling of 620040025 in words is "six hundred twenty million, forty thousand, twenty-five".