2500045901 has 2 divisors, whose sum is σ = 2500045902. Its totient is φ = 2500045900.

The previous prime is 2500045861. The next prime is 2500045903. The reversal of 2500045901 is 1095400052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1629736900 + 870309001 = 40370^2 + 29501^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500045901 - 2⁶ = 2500045837 is a prime.

Together with 2500045903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2500045903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250022950 + 1250022951.

It is an arithmetic number, because the mean of its divisors is an integer number (1250022951).

Almost surely, 2^2500045901 is an apocalyptic number.

It is an amenable number.

2500045901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500045901 is an equidigital number, since it uses as much as digits as its factorization.

2500045901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2500045901 is about 50000.4590078931. The cubic root of 2500045901 is about 1357.2171145455.

Adding to 2500045901 its reverse (1095400052), we get a palindrome (3595445953).

The spelling of 2500045901 in words is "two billion, five hundred million, forty-five thousand, nine hundred one".