25525401011603 has 4 divisors (see below), whose sum is σ = 25598539696800. Its totient is φ = 25452262326408.

The previous prime is 25525401011501. The next prime is 25525401011653. The reversal of 25525401011603 is 30611010452552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25525401011603 - 2⁴⁴ = 7933214967187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25525401011653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36569342075 + ... + 36569342772.

It is an arithmetic number, because the mean of its divisors is an integer number (6399634924200).

Almost surely, 2^{25525401011603} is an apocalyptic number.

25525401011603 is a deficient number, since it is larger than the sum of its proper divisors (73138685197).

25525401011603 is an equidigital number, since it uses as much as digits as its factorization.

25525401011603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73138685196.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 25525401011603 in words is "twenty-five trillion, five hundred twenty-five billion, four hundred one million, eleven thousand, six hundred three".