25287615507803 has 16 divisors (see below), whose sum is σ = 27621451681920. Its totient is φ = 22959611875200.

The previous prime is 25287615507767. The next prime is 25287615507851. The reversal of 25287615507803 is 30870551678252.

It is not a de Polignac number, because 25287615507803 - 2¹⁶ = 25287615442267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25287615507103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94990163 + ... + 95256003.

It is an arithmetic number, because the mean of its divisors is an integer number (1726340730120).

Almost surely, 2^{25287615507803} is an apocalyptic number.

25287615507803 is a deficient number, since it is larger than the sum of its proper divisors (2333836174117).

25287615507803 is a wasteful number, since it uses less digits than its factorization.

25287615507803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276778.

The product of its (nonzero) digits is 28224000, while the sum is 59.

The spelling of 25287615507803 in words is "twenty-five trillion, two hundred eighty-seven billion, six hundred fifteen million, five hundred seven thousand, eight hundred three".