3625591 has 2 divisors, whose sum is σ = 3625592. Its totient is φ = 3625590.

The previous prime is 3625579. The next prime is 3625603. The reversal of 3625591 is 1955263.

It is a balanced prime because it is at equal distance from previous prime (3625579) and next prime (3625603).

It is a cyclic number.

It is not a de Polignac number, because 3625591 - 2⁹ = 3625079 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 6 + 2 + 5⁷ + 5⁹ + 9 + 1 .

3625591 is a lucky number.

It is equal to p₂₅₈₄₇₅ and since 3625591 and 258475 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 (3625511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1812795 + 1812796.

It is an arithmetic number, because the mean of its divisors is an integer number (1812796).

Almost surely, 2^3625591 is an apocalyptic number.

3625591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3625591 is an equidigital number, since it uses as much as digits as its factorization.

3625591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

The square root of 3625591 is about 1904.0984743442. The cubic root of 3625591 is about 153.6241890571.

The spelling of 3625591 in words is "three million, six hundred twenty-five thousand, five hundred ninety-one".