25826590542 has 8 divisors (see below), whose sum is σ = 51653181096. Its totient is φ = 8608863512.

The previous prime is 25826590487. The next prime is 25826590547. The reversal of 25826590542 is 24509562852.

It is a sphenic number, since it is the product of 3 distinct primes.

25826590542 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25826590491 and 25826590500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25826590547) 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, 2152215873 + ... + 2152215884.

It is an arithmetic number, because the mean of its divisors is an integer number (6456647637).

Almost surely, 2^25826590542 is an apocalyptic number.

25826590542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25826590542 is a wasteful number, since it uses less digits than its factorization.

25826590542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304431762.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 25826590542 in words is "twenty-five billion, eight hundred twenty-six million, five hundred ninety thousand, five hundred forty-two".