25619712087 has 16 divisors (see below), whose sum is σ = 35526947840. Its totient is φ = 16407829152.

The previous prime is 25619712073. The next prime is 25619712089. The reversal of 25619712087 is 78021791652.

It is not a de Polignac number, because 25619712087 - 2⁷ = 25619711959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25619712089) 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, 1452043 + ... + 1469580.

It is an arithmetic number, because the mean of its divisors is an integer number (2220434240).

Almost surely, 2^25619712087 is an apocalyptic number.

25619712087 is a deficient number, since it is larger than the sum of its proper divisors (9907235753).

25619712087 is a wasteful number, since it uses less digits than its factorization.

25619712087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921742.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 25619712087 in words is "twenty-five billion, six hundred nineteen million, seven hundred twelve thousand, eighty-seven".