2505901 has 2 divisors, whose sum is σ = 2505902. Its totient is φ = 2505900.

The previous prime is 2505863. The next prime is 2505917. The reversal of 2505901 is 1095052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1565001 + 940900 = 1251^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505901 - 2⁷ = 2505773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252950 + 1252951.

It is an arithmetic number, because the mean of its divisors is an integer number (1252951).

2^2505901 is an apocalyptic number.

It is an amenable number.

2505901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505901 is an equidigital number, since it uses as much as digits as its factorization.

2505901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2505901 is about 1583.0037902671. The cubic root of 2505901 is about 135.8275821102.

The spelling of 2505901 in words is "two million, five hundred five thousand, nine hundred one".