25340256590 has 16 divisors (see below), whose sum is σ = 49759049520. Its totient is φ = 9214638720.

The previous prime is 25340256527. The next prime is 25340256629. The reversal of 25340256590 is 9565204352.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115182875 + ... + 115183094.

It is an arithmetic number, because the mean of its divisors is an integer number (3109940595).

Almost surely, 2^25340256590 is an apocalyptic number.

25340256590 is a deficient number, since it is larger than the sum of its proper divisors (24418792930).

25340256590 is a wasteful number, since it uses less digits than its factorization.

25340256590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230365987.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 25340256590 in words is "twenty-five billion, three hundred forty million, two hundred fifty-six thousand, five hundred ninety".