25010523450 has 144 divisors (see below), whose sum is σ = 73369857600. Its totient is φ = 6057676800.

The previous prime is 25010523431. The next prime is 25010523463. The reversal of 25010523450 is 5432501052.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9299706 + ... + 9302394.

It is an arithmetic number, because the mean of its divisors is an integer number (509512900).

Almost surely, 2^25010523450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25010523450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36684928800).

25010523450 is an abundant number, since it is smaller than the sum of its proper divisors (48359334150).

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

25010523450 is a wasteful number, since it uses less digits than its factorization.

25010523450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597 (or 4589 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 25010523450 in words is "twenty-five billion, ten million, five hundred twenty-three thousand, four hundred fifty".