25874838990 has 256 divisors, whose sum is σ = 92643747840. Its totient is φ = 4962954240.

The previous prime is 25874838973. The next prime is 25874839021. The reversal of 25874838990 is 9983847852.

25874838990 is a `hidden beast` number, since 2 + 587 + 48 + 3 + 8 + 9 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 222402 + ... + 318138.

It is an arithmetic number, because the mean of its divisors is an integer number (361889640).

Almost surely, 2^25874838990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25874838990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46321873920).

25874838990 is an abundant number, since it is smaller than the sum of its proper divisors (66768908850).

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

25874838990 is a wasteful number, since it uses less digits than its factorization.

25874838990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95784 (or 95778 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 25874838990 in words is "twenty-five billion, eight hundred seventy-four million, eight hundred thirty-eight thousand, nine hundred ninety".