625423511 has 2 divisors, whose sum is σ = 625423512. Its totient is φ = 625423510.

The previous prime is 625423499. The next prime is 625423531. The reversal of 625423511 is 115324526.

625423511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625423511 is a prime.

It is a super-2 number, since 2×625423511² = 782309136223134242, which contains 22 as substring.

It is equal to p_32581109 and since 625423511 and 32581109 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625423531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312711755 + 312711756.

It is an arithmetic number, because the mean of its divisors is an integer number (312711756).

Almost surely, 2^625423511 is an apocalyptic number.

625423511 is a deficient number, since it is larger than the sum of its proper divisors (1).

625423511 is an equidigital number, since it uses as much as digits as its factorization.

625423511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 29.

The square root of 625423511 is about 25008.4687855934. The cubic root of 625423511 is about 855.1810480341.

The spelling of 625423511 in words is "six hundred twenty-five million, four hundred twenty-three thousand, five hundred eleven".