25001542523 has 2 divisors, whose sum is σ = 25001542524. Its totient is φ = 25001542522.

The previous prime is 25001542519. The next prime is 25001542537. The reversal of 25001542523 is 32524510052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25001542523 - 2² = 25001542519 is a prime.

It is not a weakly prime, because it can be changed into another prime (25001542513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500771261 + 12500771262.

It is an arithmetic number, because the mean of its divisors is an integer number (12500771262).

Almost surely, 2^25001542523 is an apocalyptic number.

25001542523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25001542523 is an equidigital number, since it uses as much as digits as its factorization.

25001542523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 25001542523 in words is "twenty-five billion, one million, five hundred forty-two thousand, five hundred twenty-three".