25125050540 has 72 divisors (see below), whose sum is σ = 54692972880. Its totient is φ = 9688218624.

The previous prime is 25125050527. The next prime is 25125050603. The reversal of 25125050540 is 4505052152.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9447731 + ... + 9450389.

Almost surely, 2^25125050540 is an apocalyptic number.

25125050540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25125050540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27346486440).

25125050540 is an abundant number, since it is smaller than the sum of its proper divisors (29567922340).

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

25125050540 is a wasteful number, since it uses less digits than its factorization.

25125050540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 25125050540 in words is "twenty-five billion, one hundred twenty-five million, fifty thousand, five hundred forty".