25134140550 has 24 divisors (see below), whose sum is σ = 62332668936. Its totient is φ = 6702437440.

The previous prime is 25134140539. The next prime is 25134140567. The reversal of 25134140550 is 5504143152.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83780319 + ... + 83780618.

It is an arithmetic number, because the mean of its divisors is an integer number (2597194539).

Almost surely, 2^25134140550 is an apocalyptic number.

25134140550 is an abundant number, since it is smaller than the sum of its proper divisors (37198528386).

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

25134140550 is a wasteful number, since it uses less digits than its factorization.

25134140550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167560952 (or 167560947 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 25134140550 in words is "twenty-five billion, one hundred thirty-four million, one hundred forty thousand, five hundred fifty".