25021240254 has 96 divisors (see below), whose sum is σ = 59521651200. Its totient is φ = 7789242240.

The previous prime is 25021240243. The next prime is 25021240313. The reversal of 25021240254 is 45204212052.

25021240254 is a `hidden beast` number, since 250 + 2 + 1 + 2 + 402 + 5 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2038267 + ... + 2050505.

It is an arithmetic number, because the mean of its divisors is an integer number (620017200).

Almost surely, 2^25021240254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25021240254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29760825600).

25021240254 is an abundant number, since it is smaller than the sum of its proper divisors (34500410946).

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

25021240254 is a wasteful number, since it uses less digits than its factorization.

25021240254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12415 (or 12392 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 25021240254 in words is "twenty-five billion, twenty-one million, two hundred forty thousand, two hundred fifty-four".