25015320019 has 2 divisors, whose sum is σ = 25015320020. Its totient is φ = 25015320018.

The previous prime is 25015319981. The next prime is 25015320101. The reversal of 25015320019 is 91002351052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25015320019 - 2⁷ = 25015319891 is a prime.

It is a super-2 number, since 2×25015320019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25015300019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507660009 + 12507660010.

It is an arithmetic number, because the mean of its divisors is an integer number (12507660010).

Almost surely, 2^25015320019 is an apocalyptic number.

25015320019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25015320019 is an equidigital number, since it uses as much as digits as its factorization.

25015320019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 25015320019 in words is "twenty-five billion, fifteen million, three hundred twenty thousand, nineteen".