45125251 has 2 divisors, whose sum is σ = 45125252. Its totient is φ = 45125250.

The previous prime is 45125233. The next prime is 45125261. The reversal of 45125251 is 15252154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45125251 - 2²¹ = 43028099 is a prime.

It is not a weakly prime, because it can be changed into another prime (45125221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22562625 + 22562626.

It is an arithmetic number, because the mean of its divisors is an integer number (22562626).

Almost surely, 2^45125251 is an apocalyptic number.

45125251 is a deficient number, since it is larger than the sum of its proper divisors (1).

45125251 is an equidigital number, since it uses as much as digits as its factorization.

45125251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2000, while the sum is 25.

The square root of 45125251 is about 6717.5331037517. The cubic root of 45125251 is about 356.0190280407.

The spelling of 45125251 in words is "forty-five million, one hundred twenty-five thousand, two hundred fifty-one".