25942576590 has 128 divisors (see below), whose sum is σ = 79537489920. Its totient is φ = 5894152704.

The previous prime is 25942576567. The next prime is 25942576607. The reversal of 25942576590 is 9567524952.

25942576590 is a `hidden beast` number, since 2 + 5 + 9 + 42 + 5 + 7 + 6 + 590 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 274534 + ... + 356726.

It is an arithmetic number, because the mean of its divisors is an integer number (621386640).

Almost surely, 2^25942576590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25942576590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39768744960).

25942576590 is an abundant number, since it is smaller than the sum of its proper divisors (53594913330).

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

25942576590 is a wasteful number, since it uses less digits than its factorization.

25942576590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82383 (or 82377 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The spelling of 25942576590 in words is "twenty-five billion, nine hundred forty-two million, five hundred seventy-six thousand, five hundred ninety".