2525989 has 2 divisors, whose sum is σ = 2525990. Its totient is φ = 2525988.

The previous prime is 2525981. The next prime is 2526023. The reversal of 2525989 is 9895252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2377764 + 148225 = 1542^2 + 385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2525989 - 2³ = 2525981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2525981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262994 + 1262995.

It is an arithmetic number, because the mean of its divisors is an integer number (1262995).

2^2525989 is an apocalyptic number.

It is an amenable number.

2525989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2525989 is an equidigital number, since it uses as much as digits as its factorization.

2525989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 40.

The square root of 2525989 is about 1589.3360248859. The cubic root of 2525989 is about 136.1895604897.

It can be divided in two parts, 252 and 5989, that added together give a square (6241 = 79²).

The spelling of 2525989 in words is "two million, five hundred twenty-five thousand, nine hundred eighty-nine".