25047451999 has 2 divisors, whose sum is σ = 25047452000. Its totient is φ = 25047451998.

The previous prime is 25047451963. The next prime is 25047452011. The reversal of 25047451999 is 99915474052.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25047451999 - 2¹¹ = 25047449951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25047451199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12523725999 + 12523726000.

It is an arithmetic number, because the mean of its divisors is an integer number (12523726000).

Almost surely, 2^25047451999 is an apocalyptic number.

25047451999 is a deficient number, since it is larger than the sum of its proper divisors (1).

25047451999 is an equidigital number, since it uses as much as digits as its factorization.

25047451999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 25047451999 in words is "twenty-five billion, forty-seven million, four hundred fifty-one thousand, nine hundred ninety-nine".