3625445261 has 2 divisors, whose sum is σ = 3625445262. Its totient is φ = 3625445260.

The previous prime is 3625445227. The next prime is 3625445293. The reversal of 3625445261 is 1625445263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3166200361 + 459244900 = 56269^2 + 21430^2 .

It is a cyclic number.

It is not a de Polignac number, because 3625445261 - 2¹⁸ = 3625183117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3625445861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1812722630 + 1812722631.

It is an arithmetic number, because the mean of its divisors is an integer number (1812722631).

Almost surely, 2^3625445261 is an apocalyptic number.

It is an amenable number.

3625445261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3625445261 is an equidigital number, since it uses as much as digits as its factorization.

3625445261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

The square root of 3625445261 is about 60211.6704717615. The cubic root of 3625445261 is about 1536.2213060317.

The spelling of 3625445261 in words is "three billion, six hundred twenty-five million, four hundred forty-five thousand, two hundred sixty-one".